The reason I am asking is that this is a stray (I call her Mama Cat) I am fostering on weekends. When I brought her to the shelter this past October for a spay but she was already too far along and had kittens within 2 weeks. She is now in a foster home and all the little one have found homes. Mom still needs to hang out for about 2 weeks (she has her spay appointment on 2/17) for all her milk to dry up. Well, now she is in heat and if she starts marking she would have to go to the shelter until the Vet appointment - something I really don't want to see happening for her. Anyway, she has a home after get's the works - my mom is taking her in. So far everything is OK; I was just curious and a little anxious.