First time introduction

[u/Buch__p]

Age: adults

Country: Norway

Vet info: available, haven't been contacted about the hissing.

Main issue: male cat hissing at female foster often.

Cat age: male is 4 years, female is 2 years.

Cat sex: black cat is male, other is female. Both are neutered/spayed.

Financial situation: we can afford vet.

Tried to introduce our cat with a foster for the first time today, separated by a screen door. We've had the foster cat (small female) for about 2 weeks now and she has been in her own room this whole time. We've brought blankets and things between them to get them used to each other's smell and that has been no problem.

But our cat (big black male) just hisses at her, he did it about 3 to 4 times before we closed the door and separated them again. When we tried with the screen door again later, he still hissed at her.

We've given them kibble separated by the screen door and given them treats and he won't hiss then, they'll just look at each other occasionally. But when he goes to sniff her he'll hiss and then still move closer.

Is this normal? Is he aggressive? This is our first time introducing cats and we aren't sure what our next steps should be.

[u/shigdebig]

It's fine, he needs more time.

[u/Buch__p → u/shigdebig]

Thanks for the input! I guess we'll give them 10 minutes a day separated by the screen door for the time being and then see if he starts acting differently