Find out what? There is nothing to find out, it's easy to prove any dog is an ESA with the help of a friendly doctor.
You may be suggesting that lying about service animals is easily discoverable, which is indeed true. This is already illegal.
You may be suggesting that lying about service animals is easily discoverable, which is indeed true. This is already illegal.
But I wouldn't assume that large apartment complexes just stand by idle. Most are tired of fake ESA animals that cause them insurance & tenant issues.