I'm 17 and still like to play with my plastic animals. I either play that they are going cross country (climbing up furnature) to escape from hunting tigers, or I play swimming with them in the shower or bath, or they act out Tolkien scenes. I have more than 100 but each has its own name, history, character, friends and family connections so I usually choose the character to fit the animal - e.g Saida the elephant is usually Gandalf, Lepando the giraffe is Treebeard, A'Tuin the turtle is Galadriel and Toco the toucan is Gwaihir.
I feel like listing them all now.