tv/ movies: 1951 - Jeff Bridges - starred in this movie: ?

Questions

The ----------, often called "possum," dates back over 45 million years.?

The famous cow used as the corporate symbol on all Elmer's products is actually named ----------, and she is the spouse of Elmer, the steer who the company is named after.?

There is no mention of cats or rats in the ----------?

The optimum depth of water in a birdbath, says the Audubon Society of America, is two and a half inches. Less water makes it difficult for birds to take a bath; more makes them ----------?

The fastest animal on four legs is the ----------?