What is the maximal age a Rough-toothed dolphin reaches?
An adult Rough-toothed dolphin (Steno bredanensis) usually gets as old as 32 years.
When born, they weight 11.3 kg (24.91 lbs) and measure 99.3 cm (3′ 4″). They are a member of the Delphinidae family (genus: Steno). Fully grown, they reach a bodylength of 2.44 meter (8′ 1″).
As a reference: Usually, humans get as old as 100 years, with the average being around 75 years. After being carried in the belly of their mother for 280 days (40 weeks), they grow to an average size of 1.65m (5′ 5″) and weight in at 62 kg (137 lbs), which is obviously highly individual.

The rough-toothed dolphin (Steno bredanensis) is a species of dolphin that can be found in deep warm and tropical waters around the world.The species was first described by Georges Cuvier in 1823. The genus name Steno, of which this species is the only member, comes from the Greek for ‘narrow’, referring to the animal’s beak — which is a diagnostic characteristic of the species. The specific name honours van Breda, who studied Cuvier’s writings. There are no recognised subspecies.
Animals of the same family as a Rough-toothed dolphin
Not really brothers and sisters, but from the same biological family (Delphinidae):
- Peale’s dolphin growing to a mass of 120 kgs (264.55 lbs)
- Spinner dolphin growing to a mass of 50.5 kgs (111.33 lbs)
- Pacific white-sided dolphin becoming 25 years old
- Killer whale becoming 100 years old
- Short-beaked common dolphin becoming 20 years old
- Melon-headed whale becoming 47 years old
- Indo-Pacific bottlenose dolphin getting as big as 2.37 meter (7′ 10″)
- Tucuxi growing to a mass of 42.82 kgs (94.4 lbs)
- Southern right whale dolphin growing to a mass of 116 kgs (255.74 lbs)
- Pantropical spotted dolphin becoming 46 years old
Animals that reach the same age as Rough-toothed dolphin
With an average age of 32 years, Rough-toothed dolphin are in good companionship of the following animals:
- Sunda slow loris usually reaching 26.5 years
- Kinkajou usually reaching 29 years
- King colobus usually reaching 30.5 years
- Sambar deer usually reaching 26.42 years
- Amazonian manatee usually reaching 30 years
- Rhesus macaque usually reaching 36 years
- Banteng usually reaching 26.5 years
- Moose usually reaching 27 years
- Drill (animal) usually reaching 33.33 years
- Bobcat usually reaching 32.33 years
Weighting as much as Rough-toothed dolphin
A fully grown Rough-toothed dolphin reaches around 130 kg (286.6 lbs). So do these animals:
- Llama weighting 107.66 kilos (237.35 lbs) on average
- Harp seal weighting 132 kilos (291.01 lbs) on average
- Giant panda weighting 118 kilos (260.15 lbs) on average
- Eastern gorilla weighting 149.33 kilos (329.22 lbs) on average
- Schomburgk’s deer weighting 106 kilos (233.69 lbs) on average
- Topi weighting 127.19 kilos (280.41 lbs) on average
- Siberian ibex weighting 130 kilos (286.6 lbs) on average
- Harp seal weighting 132.25 kilos (291.56 lbs) on average
- Western gorilla weighting 113.29 kilos (249.76 lbs) on average
- Striped dolphin weighting 142.05 kilos (313.17 lbs) on average
Animals as big as a Rough-toothed dolphin
Those animals grow as big as a Rough-toothed dolphin:
- Moose with 2.1 meter (6′ 11″)
- Reindeer with 2.23 meter (7′ 4″)
- European bison with 2.9 meter (9′ 7″)
- Grey seal with 2.08 meter (6′ 10″)
- Giant eland with 2.52 meter (8′ 4″)
- Mountain nyala with 2.25 meter (7′ 5″)
- Hooded seal with 2.33 meter (7′ 8″)
- Malayan tapir with 2.22 meter (7′ 4″)
- Indo-Pacific bottlenose dolphin with 2.37 meter (7′ 10″)
- Striped dolphin with 2.3 meter (7′ 7″)
