Here is the state law that I found:
Washington
Category: B
Summary of Law: No person may possess or breed a potentially dangerous animal after July, 2007. A potentially dangerous animal includes but not limited to Large cats, wolves, bears, hyenas, non-human primates, elephants, alligators, crocodiles, water monitors, crocodile monitors; and various species of venomous snakes.
According to this info it is illegal for him to keep venomous snakes and alligators. I would imagine someone found out he had them and turned him in. But I am glad to see that at least they did mention that all precautions were taken and that the animals were healthy.
I heard of someone who had a Hedgehog in AZ and apparently she talked to much and was turned into game and fish. They got a warrent and searched her house and confiscated the animal.