my cat never went to the bathroom on the carpet but, now all of a sudden he thinks my carpet is his litter box. Why is this? could he be trying to tell me that something is wrong with him ( like he doesn't feel well, sick)?
First, you should rule out a medical problem. Your vet should be able to help with this. Your vet may want to run some tests to help with a diagnosis. If your pet is found to be healthy then a behavioral problem is possible. vetcare