Wildcard patched being able to bring them to water to tame. It's just to stop it from scratching you. You can also punch them to get them to come off, bolas don't seem to work once they're latched onto you (maybe a tribemate can do it for you).

From what we've tried you can't tame them even if they have the yellow symbol, and just had to kill any of them that don't have the green symbol. They all just say "This cat doesn't want to be tamed by you". Bring a friend/tribemate to better the odds of them liking one of you since they like different people. It seems to be much like the IRL "cat distribution system".

Also had better luck with spawns on The Island as opposed to The Center, not sure about Astraeos.