Chimp raised by humans learns sign language ; ' ` ` hurt ' after left at the preserve . Hoover the seal tells aquarium visitors , ` ` Get outta here ! '' or asks ` ` How are ya ? '' Alex the cat taught to say , ` ` I love you '' and ` ` I want my dog '' Alex , an African gray parrot , was purchased from a Chicago pet store in 1977 . Alex the cat competes with humans on object recognition , colors , and shapes .
Chimp raised by humans learns sign language ; ' ` ` hurt ' after left at the preserve . Hoover the seal tells aquarium visitors , ` ` Get outta here ! '' or asks ` ` How are ya ? '' Alex the cat taught to say , ` ` I love you '' and ` ` I want my dog '' Alex the cat competes with humans on object recognition , colors , and shapes .