We are considering the purchase of a condo in a complex that has an interesting pet rule: You can only have a dog or cat that can be carried into the building. Is this fair?
The obvious intent is to limit larger dogs since domesticated cats can be readily carried by most adults. The real test here is the strength of the owner rather than the size of the animal.
Not all animals make good pets, regardless of size. Venomous creatures, wild animals, and endangered species are certainly inappropriate.
A more difficult question concerns larger dogs. There are noise and sanitation issues, and there are special questions regarding breeds with a history of attacks. It may well be that Rover is the best of his breed, but if Rover has a bad day and mauls a child the liability could be substantial.
The condo association, for the protection of unit owners, raises a valid issue. However, a better approach would be to speak with insurance carriers to determine how pet coverage is handled, exclude animals not covered, evolve a more precise pet standard, and make certain that owners understand both the condo policy and their personal liability.