The user can use/imitate animal powers, they can run like an ostrich, swing like a monkey, sprint like a cheetah, move like a cat, take the strength of an ant, track like a dog, hide like a turtle, constrict like a snake, etc. They cannot transform into animals, as this power only enables the user to mimic animalistic traits while still in their original form. Some users can mimic multiple animals at once.
The Kratt Brothers (Wild Kratts); using the Creature Power Suit
The Katroid race (Sprucia and Gilli); via humanoid cats
Zoo Dopant (Kamen Rider W)
Regina Olympia Folnar (Swordsman of Magic Technique School and Summoned Vasreus)
Rangers of Jungle Fury (Power Rangers Jungle Fury)
Rangers of Wild Force (Power Rangers Wild Force)
Rangers of Beast Morphers (Power Rangers Beast Morphers)
Kirby (Kirby series) via Animal copy ability
Marvin Mange (The Animal); via experiment from Dr. Wilder
Rianna Holmes (The Animal); via experiment from Dr. Wilder
Creature Power Suits and Discs (Wild Kratts)
Spirit Totem/Anansi Totem (DC Comics/Arrowverse)
Peter Parker/Spider-Man (Spider-Man film series)
After his parents died in a car accident, Pete (Pete's Dragon) began a life in the forest. Having spent 6 years away from human contact and surrounded by animals, Pete acts more like an animal and less like a human.
Abandoned by her parents as a baby, San (Princess Mononoke) was taken in by the wolf tribe and grew up with them. As a result, she denies her humanity and behaves like a wolf.