- We have class pets! Carlos and Alejandro are hypoallergenic mini-Rex rabbits. Carlos Colina is a tricolored five-year-old female. Alejandro Santiago Colina is our baby, born October 1, 2012. He is a black otter. Carlos' former partner was Lola, a beautiful chocolate Rex who died peacefully on May 26, 2012. Our rabbits run and play all day, and love nothing more than being in their classroom with their students.