Thanks for the review ^^. Toby is definately going to teach Harry to tidy his room lol: there's nothing like discovering that your dog has eaten your trainers, bag, book or, in my case, CD to remind you that things should be put away safely in their respective cupboards. The chocolate scare is doubly potent as Toby could have died.

Harry, of course, is going to feel incredibly sad every time he has to say goodbye to Toby but, unlike most kids who say goodbye to their larger pets for whole terms, Harry has all the luck of having a father living at Hogwarts, meaning that Toby can stay with his other family during the day but spend the evenings with Severus and Harry.   

Thanks for the review. A large number of substances are poisonous in high enough quantity, including oxygen. Naturally, different animals have different sensitivities, which is why dogs shouldn't be given 'human food'- not because they don't deserve it but because it's not always safe for them. Toby is useful for Harry because, unlike Reggie, who is bidable, with simple needs, and Hedwig, who is pre-trained and independant, Toby a. requires training, b. has complex needs and c. doesn't understand what is good for him; like most dogs, he'd happily eat himself into an early grave. Therefore, Harry must learn to be responsible for someone other than himself.