Are humans are the only animals who have feelings? Read about the animals below and decide for yourself?

Elephant Big memories, big brains, big hearts? Researchers are exploring whether elephants experience emotions. Many believe that elephants can feel sadness and grief. For example, when a family member dies, elephants circle the body. They drop grass and branches on it. When her calf dies, a mother elephant may grieve and go without eating for days. Some people have even observed elephants weeping tears.	JupiterImages Corporation
Gorilla They laugh when they're tickled. Sing together when they're really happy. Act guilty when they've misbehaved. Gorillas show a wide range of emotions. Just look at Koko, a gorilla who learned to communicate using American Sign Language. When her pet kitten died, Koko cried and signed, "sad frown sleep cat." To learn more about how you can help gorillas, visit the "Gorilla Fun" section of gorillafund.org.	JupiterImages Corporation
Dog Tail wagging, ear-to-ear grin, your mutt beams happiness at your arrival. Laying his head upon your knee, he gazes up at you with adoring eyes. Does your dog love you—or is he just glad his goody giver is home? As scientists study our canine comrades' emotions, many agree that dogs have feelings of love and affection. Of course, that's something that pet caregivers have always known in their hearts. Best friends always love one another!	JupiterImages Corporation