Jealousy in dogs

Almost every dog owner has experienced jealousy in their dogs. This is manifested by vocalizations, agitated behavior and pulling on a leash. What researchers have discovered is that a dog acts jealous when they imagine that their owners are interacting with a rival. What is important about this study is that when a dog acts jealous, it shows that the dog has self-awareness. The study also showed that dogs act in a similar manner as children who are jealous. Dogs are one of the few animals that have this human-like behavior.  

What further illustrated the intelligence of dogs is that the dogs in the experiment only reacted to a perceived social rival and not an inanimate object. This shows that they are capable of analyzing the situation.

Riley trying to sneak up on the cat

It is exciting to learn more about the mind of a dog. It is too bad that similar experiments cannot be conducted on cats. I personally feel that cats are at least as smart as dogs.