Rex rats are easy to spot with there curly fur. the curly8 whiskers are also a dead giveaway when telling apart rex. This curly fur is almost sheep light and very tight when young. As they age the curls loosen and are more spotty. We have recently re introduced rex back into our rattery while attempting to make them dwarf. Most of our rexes are still top ear for the time being. Stay tuned for rex dwarfs!