
Heard of small dog syndrome? Chances are, if you're an owner of a toy breed, you probably have. Small dog syndrome is described as undesirable behaviors like jumping up, barking, or pulling on the leash that are sometimes exacerbated in small dogs.
These behaviors would simply not be tolerated in large breed dogs because they would become unmanageable so quickly. Vet Dr. Rebecca MacMillan says, "These dogs are often allowed to get away with this sort of behavior, with many owners turning a blind eye because the dog is small and cute."