My dogs aren't that small Yumi is the little one at 5.4lbs and she's still growing. I think most small dog breeds are prone to hypoglycemia and collapsing trachea. I think both are more likely in the smaller dogs of those breeds, thats not to say she will have issues with either, just that her chances might be a little higher than your larger dog. That said 4.5lbs is within the standard range for yorkies (4-7lbs)and I think maltese too, and I wouldn't think that her size by it's self would cause problems. I think really it depends more on her breeder, than her size, what kind of trouble you might run into. If I were you I would find out what I could about the breeder. It might give you a better idea what to expect health wise.
As for 2 dogs if she's already fairly well trained I would say 2 isn't much more trouble than one. Roughly twice as expensive, but not much harder. Mine eat together practice their tricks together, and exorcise together, so it's not a lot more work. If neither dog were very well trained it would be a huge pain trying to keep tabs on both at the same time, otherwise shouldn't be too bad. |