Monumental Questions - What is our National Mammal?

Kristie Ehrhardt • July 2, 2026

I’m sure you already know that the Bald Eagle is used as a symbol of our Nation’s freedom, strength, perseverance and independence. It is said that our founding fathers chose the Bald Eagle to adorn our Great Seal because it is indigenous to North America and if you look closely at it, you’ll see that it is holding 13 arrows and an olive branch simultaneously symbolizing the power of war and the power of peace. But, what about our national mammal? Er, maybe you didn’t even realize that we had a national mammal…


President Barack Obama designated the American Bison as our national mammal in May of 2016. It too is endemic to North America and in prehistoric times, millions of them roamed through roughly two-thirds of the United States. Their range was known as the “great bison belt” - a stretch of habitat that encompassed the forests of Alaska, the grasslands of the North American plains and stretched from the Great Basin east to the eastern Appalachian Mountains.


Side note - I’m just gonna come clean right now and tell you that the historic range of the American bison, American Buffalo or just plain bison or buffalo does NOT include the Berryessa Snow Mountain National Monument (Monument). I’m supposed to be writing about the Monument region and I picked a topic that is clearly not there but it’s important and they are impressive so please don’t tattle.


Another side note - the American Bison and the American Buffalo are one in the same and both names can be used interchangeably. Its scientific name (genus and species) is actually Bison bison so I guess calling them bison is probably more scientifically accurate but either works.


Bison are North America’s largest land animal; an adult male averages about 2,000 pounds - that’s a ton (thanks Schoolhouse Rock, I will never forget this one!), are about 12 feet long from nose to rump and about six feet tall. Females max out at around 1,000 pounds and are a little over nine feet long. In the wild bison can live ten to twenty years. Both females and males have massive forequarters and sport what looks like a shaggy, long-sleeved sweater. Both sexes have short, curved horns that are an integral part of their status in the herd and defensive strategy. During the snowy winters, bison display a dark brown winter coat and in the summer they show off their lighter brown summer-bods. Calves typically arrive from March through May depending on weather conditions. When they’re first born calves are an orangey-red color which earned them the nickname “red dogs”. Within a few months they become darker brown like their parents and their little horns start to poke through. Around this time they also begin to develop their iconic shoulder hump. The hump is made of solid muscle buttressed by elongated vertebrae. This dense network of muscles act as a powerhouse that allows the animal to swing its massive head from side to side and plow through icy snow to access buried forage enabling them to survive even the harshest winters. Although they are not known for keen eyesight, bison have superb senses of hearing and smell.


As monumental (get it?) as these animals are, they are shockingly quick and agile. Bison have been clocked at running 35 miles per hour (!), they can spin and turn on a dime, leap over high fences and are incredibly adept swimmers. All these mad skills on a strictly vegetarian diet - that’s ruminant efficiency.


For thousands of years, before the European settlers arrived, Native Americans of all tribes and regions revered the bison. They were the cultural, spiritual and resource backbone of indigenous societies across the United States. Every part of the animal was used; the meat was consumed, the hide was used for clothing, shoes and shelters, and the bones and hooves were used for tools and weapons. Even the sinew was used for sewing and bow strings. Everything was copacetic then came the Europeans with their domestic cattle diseases and thoughtless greed. Bison were hunted to near extinction within roughly just 100 years. Their numbers went from an estimated 60 million (!) to less than 550 individual animals by 1889. They were hunted mercilessly and their habitat destroyed, some say as a way to control the Native Americans by removing their primary resource.


One of the buffalo’s biggest fans was President Teddy Roosevelt. In the early 1880’s he traveled to what is now North Dakota (shout out to my people!) to hunt. After recognizing the bison’s diminishing population numbers he co-founded the American Bison Society in 1905 to help conserve and protect this American emblem.


For many years the few buffalo that remained were only found in national parks and preserves but primarily on Native American reservations. Had it not been for the willingness of tribes across the country to work with interested individuals and state and federal governments, the American Bison would be gone today. Much like the Bald Eagle, the bison is an authentic symbol of American character and as it turns out, another one of the greatest conservation success stories in U.S. history. The bison within the Yellowstone National Park boundaries are direct descendants of the original animals that roamed our country’s grasslands and are the only herd that still occupy their original prehistoric location. This free-ranging herd numbers approximately 5,500 animals and is the largest herd on public land. Recovery efforts paid off and today bison can be found in all 50 states including private and tribal lands, national parks and wildlife refuges.

RECENT ARTICLES

August 7, 2026
Our wildest areas are under threat. In June, the Administration moved to weaken protections for our wildest public lands - those designated as wilderness, Wilderness Study Areas, Lands with Wilderness Characteristics, and recommended Wilderness. What do these areas represent? Millions of acres of untrammeled backcountry. The Department of the Interior, US Forest Service and National Park Service initiated the first step in unraveling these protections. They’ve called for a “review” of eight policies, opening the door to weaken protections and paving the way for short-term extractive industries, commercial development, and resource fragmentation at the expense of long-term conservation management of some of our wildest remaining public lands. Nearly 200 million acres of wildlands across the west could be impacted by this review, including approximately 120 million acres of Wilderness Study Areas and wilderness quality lands, and 75 million acres of designated wilderness areas. This includes the nearly 94,000 acres in Cache Creek, Cedar Roughs and Snow Mountain Wilderness areas in Berryessa Snow Mountain Nation Monument right here in our own region. These policies guide how federal agencies identify, manage, and steward designated Wilderness Areas, Wilderness Study Areas, and lands with wilderness characteristics. Together, they influence the management of millions of acres of federal public lands and translate statutory requirements into day-to-day management decisions. Continuing to protect wilderness qualities is consistent with protecting recreation. In many cases, wilderness-quality land provides the best opportunities for backcountry recreation; a CA outdoor industry responsible for 545,448 direct jobs valued at $38.1 billion. The total value-added worth of CA outdoor recreation is $81.5 billion, 2.2% of our gross domestic product. The Department of the Interior’s actions present a false choice between stewarding wilderness lands and providing opportunities for recreation. Let’s tell the Administration that we oppose these rollbacks and are committed to protecting our wild places. Sign on to the Wi lderness Review- National Sign-on Letter opposing five different actions across the three agencies by August 12th. Together, we can show this administration that we care about protecting these special places today and into the future. Sandra Schubert Executive Director
August 7, 2026
I first heard about Tuleyome when I retired early from UC Davis eight years ago. I was looking for local organizations for volunteer opportunities. I discovered Tuleyome and got connected with Bill Grabert and Nate Lillge. I helped them lead hikes and school programs, then took the CA Naturalist course through Tuleyome. My capstone project was to lead a backpacking trip into the Cache Creek wilderness, which I did just as COVID was descending on us. I was, and still am, impressed at how such a small local non-profit has both ensured preservation of important wild areas and invested heavily in outreach to local schools. Working with kids from Lake County in the Redbud area was eye-opening and extremely gratifying. Some of them had literally never been on a hike in spite of growing up so close to all that spectacular wild land! I donate to Tuleyome to help them keep up the great work!!! I’ve spent countless days hiking in and enjoying the Cache Creek area; what a gem of a local resource! And, only last spring was I able to get up to Snow Mountain…so glad it’s preserved and accessible for camping and hiking. Wow! A wilderness area near my home - that’s amazing. I’m incredibly grateful for Tuleyome’s hard work that resulted in preservation of these important wild places, and I look forward to seeing what’s next.
By Kristie Ehrhardt August 7, 2026
Driving around the Berryessa Snow Mountain National Monument one rainy day revealed a network of dirt roads that were slick as snnn… well, you probably know. The wet weather made driving less than optimal for the Subaru we were in but for our amphibian friends, the low-riding California newt, the warm, misty conditions were sublime. California Newts ( Taricha torosa ) are endemic to California, which means that they are extra special because they are only found here. They occur below 6,000 feet along the Coast Ranges from Mendocino County south to San Diego County. They are also found in the foothills and western slopes of the Sierra Nevada in the San Joaquin Valley with a few isolated populations in southern San Diego County. They utilize both wetland habitat including natural and artificial pools and ponds, reservoirs, creeks and streams for breeding during winter and spring, and upland areas such as chaparral and woodland habitats where they spend summer and fall. California Newts have stubby little toes attached to short, stocky legs. Adults range from about two and three quarters inches to about three and a half inches long, not including the tail. Their bellies and undersides of their neck and chin are bright golden yellow to orange with a reddish-brown to slate gray back. California Newts reproduce from late fall to early summer depending on rainfall amounts and habitat conditions. Adults migrate from their upland refugia to their preferred wetland to breed. Eggs are attached to submerged vegetation or under rocks and females can lay up to six masses of nearly 50 eggs a day. The eggs hatch in two to six weeks depending on water conditions and temperature. Larvae are aquatic and have gills and fins. After several months the larvae begin to exit the pond and set about metamorphosing into adults and do not return to the pond again until they are ready to breed. Larvae eat small aquatic invertebrates and organic matter; adults eat insects, slugs, snails and worms as well as other amphibian eggs and larvae. Adult California Newts are highly toxic. Like other members of the genus Taricha , adults have glands on their skin that secrete the potent neurotoxin tetrodotoxin - the same toxin that is found in harlequin frogs and pufferfish. Side note, this makes them poisonous rather than venomous (like rattlesnakes). Tetrodotoxin is hundreds of times more toxic than cyanide and potent enough to kill most vertebrates. The toxin affects sodium channels and makes it so neurons are unable to fire which results in lethal muscle paralysis. One of the only predators of adult California Newts are garter snakes. Garter snakes are one of the very few organisms that have evolved to develop a resistance to the tetrodotoxin produced by the newts. Garter snakes can ingest the toxic newts with limited effects which has created an evolutionary arms race (coevolution). As the garter snakes develop stronger immunity to the toxins only the most poisonous news survive which in turn results in future generations of news with even stronger toxins. This leads to a population of garter snakes that have developed a resistance to the stronger toxin levels and and on it goes. Loads of them were bumbling along the edges of the wet dirt road that rainy day. We made several stops to relocate those that were attempting to cross but seemed to stall out in the middle, always placing them facing the direction they were aimed. I don’t know if they were heading out to their natal ponds to mingle and breed, or on their way back to nap in their upland refugia but they were definitely enjoying the day. The California Newt is currently a California Species of Special Concern due to habitat loss and invasive non-native species introduction which makes seeing so many of these little stumpy legged tetrapods enjoying the Monument even even more groovy!