[Jet Jaguar]

Your mature cat and the kittens should be fine out together and alone. If the adult gets too rough, the kittens need free run of the house to find a good spot to hide.

Smeagol will act as the dominate cat as it was his house. the kittens will learn to accept that.

[carton253]

Thank you... I just want to make sure everyone gets along.

[Slings and Arrows]

I'll echo the general opinion of this thread: Best method to get them used to each other is time plus making sure that both sets of cats have secure spaces.