A free app for Android, by Hamsoft.
Zooface – GIF Animal Face Morph is a fun and easy way to change your face into that of a wide variety of animals. You can use either static GIFs or videos, or combine the two for even more fun.
Zooface is a free app that lets you choose from over 30 animals, including a wide variety of mammals, birds, fish, reptiles, amphibians, and more. You can also select from a variety of facial expressions, from happy to sad, angry, and more. You can even choose your favorite animal face and use it as your home screen or lock screen.
You can even save your creations as either GIFs or videos and share them with friends and family.