How big does a Red-handed howler get? Here is an overview over the average adult age:
A grown Red-handed howler (Alouatta belzebul) reaches an average size of 55.1 cm (1′ 10″).
When born, they have an average size of 0 cm (0′ 0″). A full-grown exemplary reaches roughly 6.17 kg (13.6 lbs). The Red-handed howler (genus: Alouatta) is a member of the family Cebidae.
As a reference: Humans reach an average body size of 1.65m (5′ 5″) while carrying 62 kg (137 lbs). A human woman is pregnant for 280 days (40 weeks) and on average become 75 years old.

The red-handed howler (Alouatta belzebul) is a vulnerable species of howler monkey, a type of New World monkey. It is endemic to Brazil, found in the southeastern Amazon and disjunctly in the Atlantic Forest between Rio Grande do Norte and Sergipe.
Animals of the same family as a Red-handed howler
We found other animals of the Cebidae family:
- Guatemalan black howler with a size of 56.7 cm (1′ 11″)
- Wedge-capped capuchin with a size of 40.4 cm (1′ 4″)
- Geoffroy’s spider monkey with a size of 43.3 cm (1′ 6″)
- Southern muriqui with a size of 57.8 cm (1′ 11″)
- White-bellied spider monkey with a size of 46 cm (1′ 7″)
- Venezuelan red howler with a size of 56.1 cm (1′ 11″)
- Central American squirrel monkey with a size of 28.2 cm (1′ 0″)
- Tufted capuchin with a size of 42.8 cm (1′ 5″)
- Emilia’s marmoset with a weight of 309 grams
- White-eared titi with 1 babies per litter
Animals with the same size as a Red-handed howler
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Red-handed howler:
- Assam macaque with a size of 60.5 cm (2′ 0″)
- Long-nosed echymipera with a size of 45.3 cm (1′ 6″)
- Nine-banded armadillo with a size of 44.3 cm (1′ 6″)
- Bonnet macaque with a size of 47.5 cm (1′ 7″)
- Tehuantepec jackrabbit with a size of 54.9 cm (1′ 10″)
- Brown palm civet with a size of 58.9 cm (2′ 0″)
- Black-headed spider monkey with a size of 48.9 cm (1′ 8″)
- Salt’s dik-dik with a size of 59.5 cm (2′ 0″)
- Red panda with a size of 58.3 cm (1′ 11″)
- Black-footed gray langur with a size of 65.5 cm (2′ 2″)
Animals with the same weight as a Red-handed howler
As a comparison, here are some other animals that weight as much as the Alouatta belzebul:
- White-bellied spider monkey with a weight of 6.71 kilos (14.79 lbs)
- Greater naked-tailed armadillo with a weight of 5.35 kilos (11.79 lbs)
- Milne-Edwards’s sifaka with a weight of 6.57 kilos (14.48 lbs)
- Olympic marmot with a weight of 6.3 kilos (13.89 lbs)
- Suni with a weight of 5.63 kilos (12.41 lbs)
- Crab-eating fox with a weight of 5.74 kilos (12.65 lbs)
- Brown’s pademelon with a weight of 5.48 kilos (12.08 lbs)
- Thomas’s langur with a weight of 6.69 kilos (14.75 lbs)
- Northern nail-tail wallaby with a weight of 6.5 kilos (14.33 lbs)
- Raccoon with a weight of 6.37 kilos (14.04 lbs)
