Blue monkey vs Roloway monkey
The roloway monkey is heavier: 5.5 kg against 5 kg for the blue monkey, about 10% more.

Photo: Pedro Gonnet · CC BY 2.5 · Wikimedia Commons

Photo: Hans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons
What is the difference between a blue monkey and a roloway monkey?
Each point below is worked out from a pair of recorded values.
- The roloway monkey is heavier: 5.5 kg against 5 kg for the blue monkey, about 10% more.
- The roloway monkey is longer-lived: 34.8 years against 27.1 years for the blue monkey, about 29% longer.
- Both belong to the genus Cercopithecus, so they are close relatives.
- The blue monkey is listed as Least Concern on the IUCN Red List; the roloway monkey is Critically Endangered.
Side by side
| Blue monkey | Roloway monkey | |
|---|---|---|
| Scientific name | Cercopithecus mitis | Cercopithecus roloway |
| Family | Cercopithecidae | Cercopithecidae |
| Order | Primates | Primates |
| Weight | 4.21 kg – 6.93 kg | 3.85 kg – 5.5 kg |
| Length | Not recorded | Not recorded |
| Lifespan | 27.1 years | 34.8 years |
| Main food | Not recorded | Not recorded |
| Habitat | Not recorded | Not recorded |
| Conservation status | Least Concern | Critically Endangered |
| Countries recorded | Not recorded | Not recorded |
A scale drawing needs a recorded length for both animals; only weights are on record for this pair.
Full record: Blue monkeyFull record: Roloway monkeyCompare other animals