The Tippy Toy is a toy that was introduced in Nintendogs + Cats and can be bought from BARC for $32 once it's unlocked with 8,200 Owner Points or by playing 27 days. It can be thrown around the room, and it stands back up again when it lands. Dogs and cats enjoy pushing the toy and see it wobble back up again. It looks like a Russian Nesting doll.
3DS: "Pounce on this toy, and watch it pop right back up again."