Hippos can measures 1500mm (around 5 feet) in height at the shoulder and has a length of 4310-5160 mm (nearly 17 feet). Their tails can be about 560mm (2 feet) long. Hippopotamuses graze on grasses growing along the banks of their river habitats. They very occasionally eat small animals or consume carrion. (Source:http://www.eol.org/data_objects/12546679)

A Rhinoceros can weigh almost 8,000 pounds! A closely related family, Hyracodontidae, produced the largest land mammal to have ever lived, Indricotherium. This rhinoceros is believed to have stood 5.4 m tall (over 17 feet) at the shoulder and probably weighed around 30,000 kg (66,139 lbs.)! (Source: http://www.eol.org/data_objects/12561740)

Blue whale are the largest cetacean and the biggest animal ever to live on Earth. They can grow to more than 100 feet. (Source: http://www.eol.org/pages/328574)

Polar bears are the largest land carnivores. The average male is 2.6m (8.5 feet) tall and weighs 900 lbs. The average female is 2m (6.5 feet)tall and weights 500 lbs. (Source: http://wwf.worldwildlife.org/site/MessageViewer?em_id=32901.0)

Gorilla's are the world's largest primate.The largest wild adult male gorilla recorded weighed 510 pounds and stood 5 feet 11 inches. (Source: http://wwf.worldwildlife.org/site/MessageViewer?em_id=32901.0)

Tigers the biggest of all felines. Body size and morphology varies among subspecies of tigers. Siberian tigers, also know as Amur tigers, Panthera tigris altaica, are the largest. Male Siberian tigers can grow to 3.7 meters (12 feet) and weigh over 423 kg; females are up to 2.4 (7.8)meters in length and 168 kg.(Source:http://www.eol.org/data_objects/12556282)

Capybaras are the largest of rodents, weighing from 35 to 66 kg and standing up to 0.6 meters at the shoulder, with a length of about 1.2 meters. Females are slightly larger than males. (Source: http://www.eol.org/data_objects/12546922)

The African Bush Elephant is the worlds largest land mammal and the second tallest animal. They have humungous ears, about four feet (120-125 cm) across. The trunk usually measures about five feet long (about 150 cm) and weighs around 300 pounds (about 135 kg). (Source: http://www.eol.org/data_objects/12550049)