Rigor mortis (literally "stiffness of death") is a natural process within the body after somatic death in which the skeletal muscles become locked in a contracted position. The carcass becomes rigid and unbending.
Intoxication with a neurotoxin could affect the development of rigor mortis. For instance, tetanus toxin would cause the animal to be practically in rigor mortis at the time of death because it causes a spastic paralysis where the muscles are contracted during life. In contrast, botulinum toxin might cause the animal to have delayed rigor mortis or even to not develop a full rigor mortis because it blocks the nerves and causes a flaccid paralysis.
They differ because the different animals grew up or evolved in different habitats. Virginia is further up north where it is cold so, most animals there may have longer fur , depending on the type of animal. California is located near the Pacific, so most of their animals may be more adaptive to water.
Lungs do not differ that much in domestic animals. These animals need oxygen just like the animals that are in the wild.
Their skeletons tend to be on the outside
Parenting styles differ depending with the cultural difference religion and personality.
It is by its habits, habitat and appereance....
They use there fins
We humans are animals too.
depending on what the data is for
The animals are more realistically drawn than the humans.
lungs are vertical to the spine
they had no mouth
Used their own tools and animals