Do you let your cats interact with the fosters after proper introductions?
Here's my story: Last weekend a cat ran up to me in my yard and also into our hearts. I got in touch with the foster based rescue we got Calvin from and they asked me to foster. With my rental restrictions I cannot for long but I said I will for a month and if Casper does not get adopted by then, they will make other arrangements for him. I really hope that in a week or so we can show him at the local pet store. However, my dilemma has been with Calvin and Hobbes. I had trouble with Calvin when I adopted Hobbes and Calvin is being even more hissy this time. He is actually even hissing at Hobbes. Casper is in the spare bedroom and Hobbes was very curious (he is super laid back). They have seen Casper through glass doors before but I think could not smell. So today we left a tiny gap in the door for Casper and Hobbes to see each other - Hobbes was curious and Casper (the foster) hissed and tried to reach to hit Hobbes a few times. Calvin came up the stairs and hissed at Hobbes, not recognizing him and then hissed at Casper a lot too. He is "mommy's baby" and is jealous of everyone and everything that takes my attention, including DH. But getting another cat is the ultimate sin I can commit. Ideally I would like them to coexist in the same space since it is way less stress on me and I want Casper to socialize better.
Basically I am looking for any tips/ help I can get with regards to fostering.
Here's my story: Last weekend a cat ran up to me in my yard and also into our hearts. I got in touch with the foster based rescue we got Calvin from and they asked me to foster. With my rental restrictions I cannot for long but I said I will for a month and if Casper does not get adopted by then, they will make other arrangements for him. I really hope that in a week or so we can show him at the local pet store. However, my dilemma has been with Calvin and Hobbes. I had trouble with Calvin when I adopted Hobbes and Calvin is being even more hissy this time. He is actually even hissing at Hobbes. Casper is in the spare bedroom and Hobbes was very curious (he is super laid back). They have seen Casper through glass doors before but I think could not smell. So today we left a tiny gap in the door for Casper and Hobbes to see each other - Hobbes was curious and Casper (the foster) hissed and tried to reach to hit Hobbes a few times. Calvin came up the stairs and hissed at Hobbes, not recognizing him and then hissed at Casper a lot too. He is "mommy's baby" and is jealous of everyone and everything that takes my attention, including DH. But getting another cat is the ultimate sin I can commit. Ideally I would like them to coexist in the same space since it is way less stress on me and I want Casper to socialize better.
Basically I am looking for any tips/ help I can get with regards to fostering.
. I have let foster's (after a two week quarantine and making sure they are totally healthy and parasite free for sure) interact with my resident kitties. BUT, not if the foster's are short-term. Then I just don't bother upsetting the apple cart and causing unnecessary stress. Also, I have been known to be a "foster failure". I have to wonder if Casper, Calvin and Hobbes all get along famously, if you would be the same 
. Walden and Wendall blended so beautifully with my other four, I couldn't believe it. So they have a forever home, with us.
. I would make 100% sure the Casper is very, very healthy. Casper sure is a handsome boy, saw his picture in the Fur forum. 
So that was de-worming #1........the Revolution will take care of worms too and since you gave him that last Monday, then instead of the Panacur or Profender (a topical dewormer I like to use from the vet), give the Revolution again exactly two weeks from last Monday to cover the worms, fleas, etc. That is probably what I would do. Then check the stool sample two weeks after the last Revolution dosage. In between that time, you could let the boys interact, but still keep them away from Casper's litterbox. 
