The amount of pets being abandoned over Christmas or living in animal shelters has risen sharply, according to British animal charities.
One famous shelter, Battersea Dogs and Cats Home, has said it can't cope with the numbers, and has had to make a waiting list for the first time.
Charities say the recent cold weather and the world's money problems are partly to blame.
And they expect to see even more pets being abandoned in the next few months.
That's because some people will realise they can't cope with the pets they got for Christmas, so will give them up.
Scott Craddock of Battersea Dogs and Cats home said fewer people were offering to re-home pets that were in shelters.
Another reason might be that certain difficult breeds of dog are becoming more popular.
Kay Foley, of Lewisham Council, said: "We are seeing more and more bull breeds coming in - they are quite boisterous. People are not getting them trained."