Answer : No, a Musk-Ox is not heavier than an Antelope
The average weight of a Musk-Ox is 260 kg, (573 lbs) versus 700 kg, (1543 lbs) for an Antelope 
 
| Name | Name:Musk-Ox | Name:Antelope | 
| Weight | Weight:260 kg, (573 lbs) | Weight:700 kg, (1543 lbs) | 
|  | * ranges from 180 to 400kg | * ranges from 500 to 900kg | 
| Height | Height:139 cm, (4 ft, 6.7 in ) | Height:125 cm, (4 ft, 1.2 in ) | 
| Top Speed | Top Speed:60 kph, (37 mph) | Top Speed:70 kph, (43 mph) | 
| Lifespan in Wild (years) | Lifespan in Wild (years):17 | Lifespan in Wild (years):20 | 
| Description | Description:Musk-ox live in Canada, Greenland, and Alaska. They have long hair and a shoulder hump. Their outer hair is coarse, while their under hair is fine. They have curved horns which are used for aggressive and violent fighting. | Description:The Antelope resembles a deer, and is found in Asia, Africa, and America. They have long legs, permanent antlers that are curved, and they feed on grass. | 
|  |  |  | 
| Name:Antelope | 
| Weight:700 kg, (1543 lbs) | 
| * ranges from 500 to 900kg | 
| Height:125 cm, (4 ft, 1.2 in ) | 
| Top Speed:70 kph, (43 mph) | 
| Lifespan in Wild (years):20 | 
| Description:The Antelope resembles a deer, and is found in Asia, Africa, and America. They have long legs, permanent antlers that are curved, and they feed on grass. | 
|  |