 While Darwin is known for his thesis that there is continuity between humans and other animals in their morphological and psychological properties, one might be forgiven for thinking that Darwin was sometimes overly hasty in ascribing some human properties to animals. In The Descent, Darwin discusses cases of horses and dogs who are ill-tempered and sulky, a baboon and a dog who recognized friendly people after years apart, dreaming canaries, elephants who blow on out-of-reach objects to bring them closer, a bear who pawed the water to draw in a floating object, a monkey who kept a stone hidden in his bedding that he used to crack nuts, and female birds who are attracted to male songs and bright colors. Darwin takes these cases to suggest animal emotion, memory, imagination, reason, property, and aesthetic sensibility.