Answer : Yes, a Cow is heavier than a Mongoose
The average weight of a Cow is 650 kg, (1433 lbs) versus 2 kg, (4 lbs) for a Mongoose 
 
| Name | Name:Cow | Name:Mongoose | 
| Weight | Weight:650 kg, (1433 lbs) | Weight:2 kg, (4 lbs) | 
|  | * ranges from 400 to 800kg | * Egyptian Mongoose - ranges from 1.7 to 4kg | 
| Height | Height:170 cm, (5 ft, 6.9 in ) | Height:53 cm, (1 ft, 8.9 in ) | 
| Top Speed | Top Speed:40 kph, (25 mph) | Top Speed:32 kph, (20 mph) | 
| Lifespan in Wild (years) | Lifespan in Wild (years):16 | Lifespan in Wild (years):12 | 
| Description | 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. | Description:The Egyptian Mongoose lives in hollow logs, burrows, and holes in the ground which are near a water source. They have grey fur with brown dots. They have a low, long body which can be mistaken for a reptile at a distance. | 
|  |  |  | 
| Name:Cow | 
| Weight:650 kg, (1433 lbs) | 
| * ranges from 400 to 800kg | 
| Height:170 cm, (5 ft, 6.9 in ) | 
| Top Speed:40 kph, (25 mph) | 
| 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. | 
|  |