Rex rats have wavy or curly fur. Rex can be bred into any other kind of rat, so see related descriptions. Such rats have a double-dose of the rex trait. They thrive at a few degrees warmer than the average rat would. Like rex and standard rats, their temperments can vary greatly.
Dumbo rats have broad heads and large, round, lowset ears.
Dumbo rats have a tendancy to be laidback, relaxed and calm due to careful breeding whent he variety was still being developed. You should ask around at clubs, shows, online and elsewhere for reputable breeders. Because tails help the rat to loose heat- manx rats will do poorly in a hot enviroment. Special care must be taken in summer months to ensure your manx rat does not suffer hyperthermia. Manx rats can thrive is slightly lower temperatures than normal rats because they retain heat better- however, the differennce is not greatly different and one should not neglect to avoid drafts and low temperatures with these rats.