I'm staying with friends who, I don't know why, have a cat with no ID, hasn't been neutered, and wanders off when he feels like it. All the cats I have experience with were fixed indoor cats so his behaviour is odd to me. Anyway last spring he vanished for about a week and came back, this year he is on day 11 since I have seen him. I have asked with the neighbours and am checking the local animal shelter websites, nobody has seen him. I notice also that other cats in the neighbourhood that would never walk on the lawn when he was here are now coming and going as they please so I imagine he has not even been coming by in the night and re-marking his territory. How long, on average, do male sexually active cats go missing for? Should I assume I won't see him again after 2 weeks? A month? He kind of adopted me as his friend in the house, his food dish on my floor is becoming an uncomfortable reminder that my friend isn't here anymore but I don't want to give up hope too soon.