We've got three, all pets that our kids found out they couldn't keep so they "temporarily" left with us.
One's just a mutt(terrier mixed with God alone knows what)but she's smarter than some people I've been around and pretty well rules the roost. Number two is a one-eyed Australian Shepherd who must have a double dose of herding genes, because she'll run field trails on absolutely everything that gets inside the fence. The youngest is a "Yellow" Lab (She's actually snow white)who is hands down the best dog I've ever been around, but snubs everybody as soon as she sees our oldest grandson. (Nobody can figure out just who belongs to whom in that relationship.)
Try to take any of those dogs, and you'd better bring lots of help with supplies for a long term effort.
That's just to get by me, and then you'd have to deal with Grandma.
She probably thinks that grandson is her personal property. My dog feels that way about me . . . she will even do that "get between behavior" if my hubby or my kids give me a hug. Just a LITTLE possessive . . .