The cultural association between "alpha males" and wolf packs, when actually the dominance is shared by a mated pair.
Any non-lion big cat, particularly tigers, shown as hunting in packs.
Kookaburra sounds as ambience for literally any jungle or exotic forest in film.
Hamsters being portrayed as cute and harmless, which sadly leads to people keeping pet hamsters in groups, which is a big no-no.
All penguins shown as living in Antarctica (even the Happy Feet movies couldn't resist having Magellanic and fairy penguins in a polar habitat).
The perception that birds, reptiles etc. are inherently less smart, evolved or complex than mammals.