Why not refer to the answers you received the last time you asked (a few hours ago)?!
If you don’t know, and are too lazy to research beyond YA, STOP breeding! Supposedly you breed already, but you are asking here?
Sheesh.
How about just going down to the shelter and picking up some chi pups? They are plentiful, and they need homes.
Depends… there’s more to it than that.. You should do some research.. Google it..