Many animals don't have homes at christmas, they spend their time living in animal shelters.
Some of these shelters are non-kill animal shelters, some of them are animal kill shelters. You can check the animal charities website to see what their policy is on pets, and whether or not they kill, or not.
You can donate blankets, and toys - or even make blankets and toys for the animals!
You can donate money to save the animals, or money to the charity!
And, you can even adopt a pet (although, adopting a pet is a life long commitment, so make sure that you can commit!).