Answer : No, an Armadillo is not heavier than a Mandrill
The average weight of an Armadillo is 15 kg, (33 lbs) versus 20 kg, (44 lbs) for a Mandrill 
 
| Name | Name:Armadillo | Name:Mandrill | 
| Weight | Weight:15 kg, (33 lbs) | Weight:20 kg, (44 lbs) | 
|  | * ranges from 4 to 30kg | * ranges from 11.5 to 30kg | 
| Height | Height:n/a | Height:47 cm, (1 ft, 6.5 in ) | 
| Top Speed | Top Speed:48 kph, (30 mph) | Top Speed:40 kph, (25 mph) | 
| Lifespan in Wild (years) | Lifespan in Wild (years):8 | Lifespan in Wild (years):25 | 
| Description | Description:Armadillos are from North and South America, and have very hard shells, which they can roll up into, in the shape of a ball. They eat insects and have strong claws which they use to dig for food and shelter. | Description:Mandrills live in tropical forests of western-central Africa. They are known for a bright colorful nose that intensifies in hue when they get excited. Their chests turn blue as well, and red dots appear on their ankles and wrists. | 
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