Animals
So a dog, a seal, a small bear (?), and a deer.
Animals is a free design resource made by Dribbble user Daisy Binks. As far as I can tell, its license is Unknown.
Helpful hint: Dribbble users are nice. If the license is unknown, it is usually because they forgot to mention it explicitly; not because they were being stingy. Ask nicely and they will probably allow you to use it.