There are various options in the menu that shows that allow you to do various things with animals when you click on them.
For example you can use the menu to:
Move the animal to another spot on your farm
Move the animal to the appropriate animal shed, like a llama to the wool shed.
Add the animal to your Item Storage
The eat command on a squirrel will make the squirrel will make him sit down and eat a nut. This does not mean they will eat your crops, they are not programmed to do this, so don't worry! There are various other commands on different animals, like wander around, jump, lay down, sleep, hop, sit, wag tail etc..... just a bit of fun to watch. The little yellow chicken when you make it move is a speedy fellow and runs quite fast, try moving it from one side of a clear farm to the other side and watch it run
.
When there are a lot of items on your farm, when moving an animal to another spot it will try to find a clear path to that spot. If there isn't one it will teleport to that spot instead, just like your avatar does when that comes across the same problem.