Sun Bear vs Sloth Bear
Quick answer
In a hypothetical one-on-one, the Sloth Bear would most likely come out on top in a close contest, thanks to its raw strength and superior speed. In reality, animals like these rarely meet, and both would usually avoid a fight.
This is a hypothetical, educational comparison based on typical size, strength, and natural weaponry. In the wild these animals rarely meet, and most encounters end without a fight.

Mammal
Vulnerable
Mammal
VulnerableSun Bear vs Sloth Bear compared
| Attribute | Sun Bear | Sloth Bear |
|---|---|---|
| Weight | 45 kg | 90 kg |
| Length | 1.4 m | 1.7 m |
| Top speed | 30 km/h | 40 km/h |
| Strength | 55/100 | 65/100 |
| Deadliness | 35/100 | 40/100 |
| Intelligence | 58/100 | 55/100 |
| Lifespan | 25 yr | 25 yr |
Sun Bear vs Sloth Bear: common questions
Who would win in a fight, a Sun Bear or a Sloth Bear?
In a hypothetical one-on-one, the Sloth Bear would most likely come out on top in a close contest, thanks to its raw strength and superior speed. In reality, animals like these rarely meet, and both would usually avoid a fight.
Which is bigger, the Sun Bear or the Sloth Bear?
The Sloth Bear is heavier, weighing around 90 kg compared with the other's 45 kg.
Which is faster, the Sun Bear or the Sloth Bear?
The Sloth Bear is faster, reaching about 40 km/h versus 30 km/h.
Which lives longer, the Sun Bear or the Sloth Bear?
The Sun Bear typically lives longer, up to around 25 years compared with 25 years.
Sources & references
Conservation status follows the IUCN Red List of Threatened Species; size, weight, speed, and lifespan figures are drawn from Animal Diversity Web (University of Michigan Museum of Zoology) and Nowak, Walker’s Mammals of the World (Johns Hopkins University Press), cross-checked against each species’ own guide. Compare full profiles for habitat, diet, and behaviour:
- Sun Bear — full guide
IUCN Red List (Vulnerable, Helarctos malayanus)
- Sloth Bear — full guide
IUCN Red List (Vulnerable, Melursus ursinus)
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Animal Diversity Web — University of Michigan Museum of Zoology
Life-history, morphology, and measurement data for Sun Bear and Sloth Bear.
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Nowak, R. M. (1999). Walker’s Mammals of the World (6th ed.). Johns Hopkins University Press.
Standard reference for body size, weight, and life-span ranges.
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Global Animal Guide editorial standards
How we research, source, and review wildlife comparisons.
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