half brother?

Question
Hey i got a cat a year ago... and now her mother had another liter with a different cat... will it be safe if i eventually mate both of them?

Answer
Dear Sara

It is never a good idea to mate half brother/half sister or father/daughter mother/son as you are risking having kittens with genetic problems.  

If you want kittens you need to make sure that they are as unrelated as possible to make sure that you have good strong healthy kittens.

Marcia.