Sable(female) mad at Logan (male)

We've had sable for a bit more than 2 weeks now and..I don't know...logan used to get made for the first days that sable was here because it was his territory and now sable is attacking at logan. For the weeks we've had them they have been fine, agknowledging each other as they pass by and smelling each others faces for a few seconds but now they are just mad at each other. What could possibly a reason. Just a few seconds ago logan sniffed her side and see turned around and took a swipe at his face, whats happenin?

Sounds like typical behavior where they are still figuring each other out. As long as there is no blood, you're ok. My three have been together now for over a year and just a little while ago, Carly whacked at Much. Lucy whacks everyone because she's just contrary.

If it escalates, then you may need to restart the introductions by keeping them apart for a few days. Feliway diffusers also help when you have a multi-cat household.

Are they both desexed?

Logan is, Sable isn't because she's feeding the kittens and wouldn't that be bad because there would be no milk?

Spaying a cat doesn't affect her milky supply. I don't know when this rumour started on TCS but a lot of people have been saying that lately. That's probably why she took a swipe at him.