Yellowstone Wildlife Facts and Figures

Yellowstone, the first national park, is renowned for its geysers, hot springs, and diverse wildlife. It hosts the largest concentration of mammals in the lower 48 states, including gray wolves, elk, grizzly bears, American bison, and North American river otters. Each species has unique behaviors and adaptations that allow them to thrive in the park's environment. Gray wolves hunt in packs, primarily preying on elk. Elk are abundant and known for their impressive antlers. Grizzly bears emerge from hibernation to hunt and raise cubs. Bison, the largest land mammals, roam freely and are agile despite their size. River otters utilize the park's thermal waters for year-round activity and survival.

What is Yellowstone National Park most famous for?

• Its geysers and hot springs

• Its beaches

• Its deserts

• Its skyscrapers

How many wolves typically make up a pack in Yellowstone?

• 10 wolves

• 20 wolves

• 15 wolves

• 5 wolves

What percentage of a gray wolf's diet is made up of elk during winter?

• 100%

• 50%

• 90%

• 70%

What is the estimated population range of elk in Yellowstone during summer?

• 10,000 to 20,000

• 1,000 to 5,000

• 20,000 to 30,000

• 5,000 to 10,000

What is the primary use of antlers for male elk during mating season?

• To build nests

• To fight over females

• To swim faster

• To dig for food

How many grizzly bears are estimated to live in Yellowstone?

• 50

• 100

• 150

• 200

For how long do female grizzly bears typically raise their cubs?

• Four years

• One year

• Two years

• Three years

What is the maximum weight a male bison can reach?

• 2,000 pounds

• 500 pounds

• 1,000 pounds

• 1,500 pounds

What nickname is given to bison calves due to their fur color?

• Orange pups

• Golden calves

• Red dogs

• Brown bears

What feature allows river otters to access water year-round in Yellowstone?

• Their thick fur

• Their webbed feet

• Their diet

• Thermal features