The tongue most likely.
Your lungs are the largest breathing muscle in your body.
masseter
The human Heart is the largest single muscle in the body.
The muscle around the mouth is called the orbicularis oris muscle. It is responsible for controlling movements of the lips and mouth, such as puckering and smiling.
gluteus maximus is the largest muscle sartorius muscle is the longest muscle
A caninus muscle is a a facial muscle of the mouth
the sperm whale has the third largest mouth
The largest chest muscle in a cat's body is the pectoralis minor. In humans, the largest chest muscle if the pectoralis major.
The organization of a skeletal muscle from smallest to largest is as follows: myofilaments > myofibrils > muscle fiber > fascicle > muscle
masseter, it is also the strongest muscle in the body
mouth muscleeeee (:
The Crocodile, Hyena and one of the octopus species