Dogs are just great!
Yeah, but its sad that direct ancestor of the dog is extinct.
Really?  What was the direct ancestor?
The gray wolf, but they are not related to modern wolves that were first domesticated.
So dogs of today came from gray wolfs.  Very interesting. 
Exactly, and who would of thought that they would become "man's best friend".
Dogs have come a long way.  But yes...my little Fluffy is my best friend. 
Aww, how cute. I want to meet your little fluffers. I bet she is a great companion and is good at aiding you.