Answer : A Platypus is lighter than a Hippopotamus
The average weight of a Hippopotamus is 200 kg, (441 lbs) and the average weight of a Platypus is 2 kg, (4 lbs)
 
| Name | Name:Hippopotamus | Name:Platypus | 
| Weight | Weight:200 kg, (441 lbs) | Weight:2 kg, (4 lbs) | 
|  | * Pygmy Hippopotamus - ranges from 160 to 275kg | * Duck Billed Platypus - ranges from .7 to 2.4kg | 
| Height | Height:88 cm, (2 ft, 10.6 in ) | Height:16 cm, (6.3 in ) | 
| Top Speed | Top Speed:30 kph, (19 mph) | Top Speed:35 kph, (22 mph) | 
| Lifespan in Wild (years) | Lifespan in Wild (years):30 | Lifespan in Wild (years):6 | 
| Description | Description:Pygmy Hippopotamus is the mini version of the common or river hippo. It has a rounder and narrower head, a greenish-black, smooth layer of skin that secretes a pink fluid (blood sweat), which gives it a shiny look. It also acts like a sunscreen to prevent dehydration. | Description:The duck billed platypus lives in Tasmania and eastern Australia. It is among the rare sort of mammals that lay eggs. It has otter-like feet, a duck-like bill, and a beaver-like tail. They locate prey by electric fields. Males have poisonous spikes that are very painful to humans. | 
|  |  |  | 
| Name:Hippopotamus | 
| Weight:200 kg, (441 lbs) | 
| * Pygmy Hippopotamus - ranges from 160 to 275kg | 
| Height:88 cm, (2 ft, 10.6 in ) | 
| Top Speed:30 kph, (19 mph) | 
| Lifespan in Wild (years):30 | 
| Description:Pygmy Hippopotamus is the mini version of the common or river hippo. It has a rounder and narrower head, a greenish-black, smooth layer of skin that secretes a pink fluid (blood sweat), which gives it a shiny look. It also acts like a sunscreen to prevent dehydration. | 
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