Hampster x Rat Hybrids?

Can this actualy happen, I mean I geuss it can but I mean HUH!?

http://toronto.craigslist.org/pet/300962186.html

I doubt it, and craiglist has removed the posting.

Nope, it's not possible. They were probably gerbils or degus.

No, they have different chromosome counts I believe. A mouse is much closer related to a rat, and in laboratories, most rat-mouse hybrid embryos only get to a point where the cells split a few times and then die.

Ahh, the wonders of speciation and evolution. Gotta love nature!