The large snail a Houston resident found recently wasn't a giant African snail after all, according to state invertebrate biologist Michael Warriner. Rather, it was the similar-in-appearance rosy wolf snail. That's good news for Texans because the rosy wolf snail doesn't carry the potentially deadly zoonotic parasite transmitted by the African snail, which has posed problems in Florida. Officials said the panic that spread over the case of mistaken identity was not a bad thing. "It is fantastic people are alerting local and state officials when they see something suspicious," said Tanya Espinosa of the USDA.