Answer : A Hippopotamus is slower than a Cow
A Hippopotamus has an average top speed of 30 kph, (19 mph) and for a Cow it is 40 kph, (25 mph)
 
| Name | Name:Hippopotamus | Name:Cow | 
| Top Speed | Top Speed:30 kph, (19 mph) | Top Speed:40 kph, (25 mph) | 
| Height | Height:88 cm, (2 ft, 10.6 in ) | Height:170 cm, (5 ft, 6.9 in ) | 
| Weight | Weight:200 kg, (441 lbs) | Weight:650 kg, (1433 lbs) | 
| Lifespan in Wild (years) | Lifespan in Wild (years):30 | Lifespan in Wild (years):16 | 
| 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:Cows are usually brown, black, and/or white, typically spotted. They eat grasses, flowers, and seeds, live in herds, and are used for milk. | 
|  |  |  | 
| Name:Cow | 
| Top Speed:40 kph, (25 mph) | 
| Height:170 cm, (5 ft, 6.9 in ) | 
| Weight:650 kg, (1433 lbs) | 
| Lifespan in Wild (years):16 | 
| Description:Cows are usually brown, black, and/or white, typically spotted. They eat grasses, flowers, and seeds, live in herds, and are used for milk. | 
|  |