We had two cats. Both boys who were best friends, cuddled and slept together. Sadly one vainished/presumed died around 10 months ago. The remaining cat is middle aged, the other was younger. Hes always lived with another cat, at one point we had 4 but now down to just him.
Since then his friend has been okay, mostly potters around the garden keeping the mice population from exploding and sleeping on our beds. He seem fine, no negative behaviours. He sometimes unsuccessfully tries to get the dog to play with him but doesn’t really bother with us other than to request food.
I was thinking about getting another younger cat to keep him company (and to help with the mice- we live very rurally with outside pets and there’s millions of the buggers in everything!) Im a little worried it would upset the balance though. Do cats need friends? Can they be happy solitary?