Horribly expensive and, just to let you know, often waaaaaay too fussy for the age of the children they're intended for. My (much younger) sister had something similar to this and, by the time you've gotten them to 'interact' with it, recorded their voice print etc, they're naffed off and bored.
Oh, and it drinks batteries...
Possibly still better than a real puppy though, in terms of work. At least it can go in a box when the kids get bored.