"A dog?" said Tonks, her eyebrows raised in surprise as if this were the first time she'd heard of the idea. This wasn't going to be easy to work around, but an idea trickled into her mind.
"But Gabe--what about when you go to Hogwarts?" She nuzzled the top of his head affectionately. "That's not for a few years--" Several, thank god. "--but a dog would live for loads longer than that. Are you going to come home every day to feed it and walk it and let it out?"
She ruffled his hair. "I'll make you a deal. I'll get you any dog you want, any dog in England, when you graduate from Hogwarts. And in the meantime, what about a pet that you can take to Hogwarts with you, so you won't have to leave it behind to be lonely without you?"