What dogs and humans have that are different?

Dogs and humans share many similarities, but there are also some key differences between the two species.

Physical differences:

* Dogs have four legs, while humans have two.

* Dogs have a tail, while humans do not.

* Dogs have a muzzle, while humans have a nose.

* Dogs have fur, while humans have hair.

* Dogs have claws, while humans have nails.

* Dogs have a shorter life expectancy than humans.

Behavioral differences:

* Dogs are pack animals, while humans are social animals.

* Dogs are territorial, while humans are not.

* Dogs are more likely to bark than humans.

* Dogs are more likely to chew than humans.

* Dogs are more likely to dig than humans.

* Dogs are more likely to chase than humans.

Cognitive differences:

* Dogs have a smaller brain than humans.

* Dogs have a shorter attention span than humans.

* Dogs are not as capable of complex thought as humans.

* Dogs are not as self-aware as humans.

Emotional differences:

* Dogs are more emotional than humans.

* Dogs are more likely to experience fear, anxiety, and aggression than humans.

* Dogs are more likely to be loyal and affectionate than humans.

* Dogs are more likely to be playful and energetic than humans.

Communication differences:

* Dogs communicate with each other through barking, howling, growling, and body language.

* Humans communicate with each other through talking, writing, and body language.

* Dogs are not as capable of understanding human language as humans are of understanding dog language.

Training differences:

* Dogs are more trainable than humans.

* Dogs are more likely to respond to positive reinforcement than negative reinforcement.

* Dogs are more likely to learn by observation than by instruction.

Overall, dogs and humans are two very different species with a number of physical, behavioral, cognitive, emotional, and communication differences. However, despite these differences, dogs and humans can form strong and lasting bonds with each other.