They cage the animals at night?

Please provide me with more context! I need to know what "they" refers to and what animals you are asking about. For example:

* Who are "they"? Are you talking about a zoo, a farm, a pet owner, a wildlife sanctuary?

* What animals are you referring to? Lions, chickens, dogs, fish?

Once you give me more information, I can help you figure out if the animals are caged at night.