A yearling male kitten (left) meets his mother in a playful encounter in western Montana. Contact Kalon for purchasing options.

Kalon has been photographing this male wolverine since 2011. Here, he investigates the camera with caution. Contact Kalon for purchasing options.

This bobcat, photographed in the Pintler Range of Montana, appears cautiously curious about the camera. Contact Kalon for purchasing options.

An adult Canada lynx passes by the camera on a cold winter day. Contact Kalon for purchasing options.

This wolverine was photographed in the Pintler Range of Montana just before disappearing into a mound of boulders. Contact Kalon for purchasing options.

A red fox assesses the night, possibly hoping for a meal of snowshoe hare or vole. Contact Kalon for purchasing options.

An adult female lynx prowls a ridge near the Continental Divide in Montana.

A young male lynx leads the hunt for snowshoe hare as his mother trails vigilantly behind.

A red fox investigates some coyote tracks on a cold winter night.

An adult female lynx surveys her hunting ground from her favorite snow-topped hill.

An adult female mountain lion traveling with her nearly grown kittens paused to investigate the camera in this photo montage.

An adult male lynx pauses to glance at the camera as he passes by.

Pine Martens are members of the Mustelidae family. They differ from fishers and wolverines (also members of Mustelidae) in their smaller size and lighter fur color.

This photograph was taken in late spring. The lynx’s posture contrasted with the morning light seem to capture both the fatigue of a long winter and the hopeful quality of warmer weather on the horizon.

Wolverines are one of the rarest mammals in the lower 48 states. Adult males, like this one, typically weigh between 30 and 40 pounds and maintain home ranges of up to 500 square miles.