Elephant.
Many people consider the cheetah to be the most graceful animal due to its speed and agility when running. Their sleek, aerodynamic bodies and powerful muscles allow them to move effortlessly across the savannah.
Muscles are metabolically active. Contractions of muscles cost ATP. So there are many mitochondria
if you mean ribs it can be any animal.The most common are pork and buffallo ribs
An African elephant's trunk contains around 150,000 muscles, making it one of the most versatile and dexterous appendages in the animal kingdom. These muscles enable the elephant to perform intricate tasks like picking fruits, spraying water, and even manipulating small objects.
For many people it's the talking muscles. For runners it's the leg muscles. For barmaids it's the biceps/triceps.
Lower extremity needs most blood supply when climbing the stairs. This supply goes to the muscles.
skeletal muscles
skeletal muscles
The Humerus bone would be most simialr to the femur. It goes from the shoulder to the elbow. there many muscles connected to it.It also connects the scaupla to the lower arm
Tentacles need the most muscles.
Most leg muscles and arm muscles, some muscles in the head, and most internal muscles.
There are many independent animals in the world. There is no one most independent animal in the world. though.