What animal freezes solid in the winter, but then thaws out when it warms back up?

I work best on a deadline so I start projects close to their due date.

A.) Iguanas

A.) Iguanas

I work on the tasks that I enjoy most first.

B.) Arctic Fox

B.) Arctic Fox

I work on the tasks that I enjoy most first.

C.) Painted Turtle Hatchlings

C.) Painted Turtle Hatchlings

I work on the tasks that I enjoy most first.

D.) Wood Frog

D.) Wood Frog