I have a 15 week old chi, a female. And in a few days I will be bringing home a female yorkie. The breeder of the yorkie says she is very laid back and almost shy even. But what do I need to know in order to ensure they hit it off and that each of them has a smooth transition? Also, PLEASE HELP!!! My chihuahua puppy loves to chew on toys, but she chews right through anything!! So, I even tried the nylabone keys, went through them in ONE DAY. Any toy I get her she chews right through it. When I say through it, I mean tears it to pieces in that I have to take it away to make sure she doesn't swallow any. Can anyone recommend good toys (she likes the HARDER stuff ie: plastic like things) that she maybe would last her a little longer? THANK YOU.