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The longer hind legs of the tiger enable it to jump powerfully, covering up to 10 metres in a single leap. Their forelegs have a solid bone running through them, which reinforces them and makes them able to support a massive amount of muscle tissue. This means that they are as strong as possible, which is important as the tiger uses these forelimbs to grab and hold onto its struggling prey, even when the hunter is running at high speeds. The collarbone of the tiger is particularly small in comparison to the rest of the skeleton and in comparison to other endoskeletal mammals. This enables it to achieve longer strides without hindrance.
Another skeletal feature that gives the tiger extra strength and flexibility is its spine, which has 30 vertebrae (as opposed to our 25) and extends to the very tip of the long tail.
The internal organs include:
Lungs – respiration
Heart – circulation of blood
Brain
Liver – processing of chemicals
Stomach – breakdown of food
Kidney – filtering of blood and removal of waste products
Intestines – breakdown and digestion of food
Bladder – holding of urine until ready for excretion.