My two share a shelter, but I know they would not let another cat inside. Even for my two, I have a shelter they can share and then smaller rubbermaid boxes they can have to themselves if they want to be alone. My two love to snuggle, but they are not keen about the 3rd cat I have around. I am trying to find a way to get him his own shelter.I have one more question: will cats share a shelter if there is enough space? I'm worried I wont have enough shelters for 4 cats. I walked out this morning and the calico was using the Rubbermaid box. They all have taken a major liking to our deck and Peanut and Pepper try to chase the other two off so not sure if they would share.
I think you will just have to try and see. If you notice they don't all want to be together, then you will need more than one. Also since Peanut and Pepper may be claiming the deck as their territory and the others either may not be allowed on the deck or only allowed when Peanut and Pepper are not there. My boys will chase the 3rd cat away if they are on the deck when he comes. He prefers to be under the deck, but I cannot fit a shelter under there.