Claim dogs need better family pets than cats which reason would best support. The claim is it dogs are more reliant on their owners owners have to take care to make sure their dogs getting enough exercise veterinarian care for dogs is more expensive than veterinary care for cats or dogs tend to be more bonded to their owners and cats.

The reason "dogs are more reliant on their owners" would best support the claim that dogs are better family pets than cats. This reason suggests that dogs require a higher level of care and attention from their owners compared to cats. By being more reliant on their owners, dogs often rely on their owners for exercise, medical care, and emotional bonding. This supports the argument that dogs make better family pets as they require more involvement and responsibility from their owners.