which animals hibernate?which animals estivate?

Answer 1

Some warm blooded animals hibernate.
Cold blooded animals hibernate as well as aestivate.
This is a general statement and there are exception to this.

Answer 2

Animals such as squirrels and groundhogs hibernate. Many other rodents also hibernate. Lungfish and water-holding frogs are examples of animals that estivate.

Answer 3

brown bears hibernate.Salamanders estivate.