My neighbors have 3 cats, which I'm looking after this week, and looked after for a few days about a month and a half ago. The three cats are one adult male, one adult female, and a kitten. The last time I watched them, the kitten was very small, about 4 weeks old, and the female and kitten had started a mother-son relationship, the kitten and the female slept together, the kitten suckled from the female etc. Then the kitten got too playful for the female cat's likings, it started pouncing on her tail and just annoying her in general, so the female cat's been driven off, and the kitten and the male (who likes to play alot too) have become companions. The kitten is pretty big now, about 3/4 grown, and according to their owners, the kitten has actually started suckling from the male Why would that happen? It's clearly big enough that even if it were with it's original mother it wouldn't be suckling anymore, and it's suckling from a male cat, why does the male allow that?