Tarantula vs Brown Recluse Spider
Quick answer
It is too close to call. The Tarantula and the Brown Recluse Spider are evenly matched on paper, and in the wild the outcome would come down to size, surprise, and circumstance.
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.

Invertebrate
Least Concern
Invertebrate
Not EvaluatedTarantula vs Brown Recluse Spider compared
| Attribute | Tarantula | Brown Recluse Spider |
|---|---|---|
| Weight | 85 g | 1 g |
| Length | 13 cm | 2 cm |
| Top speed | 2 km/h | 0.5 km/h |
| Strength | 6/100 | 8/100 |
| Deadliness | 25/100 | 45/100 |
| Intelligence | 5/100 | 15/100 |
| Lifespan | 20 yr | 3 yr |
Tarantula vs Brown Recluse Spider: common questions
Who would win in a fight, a Tarantula or a Brown Recluse Spider?
It is too close to call. The Tarantula and the Brown Recluse Spider are evenly matched on paper, and in the wild the outcome would come down to size, surprise, and circumstance.
Which is bigger, the Tarantula or the Brown Recluse Spider?
The Tarantula is heavier, weighing around 0.085 kg compared with the other's 0.001 kg.
Which is faster, the Tarantula or the Brown Recluse Spider?
The Tarantula is faster, reaching about 2 km/h versus 0.5 km/h.
Which lives longer, the Tarantula or the Brown Recluse Spider?
The Tarantula typically lives longer, up to around 20 years compared with 3 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:
- Tarantula — full guide
IUCN Red List (Least Concern, Theraphosidae)
- Brown Recluse Spider — full guide
IUCN Red List (Not Evaluated, Loxosceles reclusa)
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Animal Diversity Web — University of Michigan Museum of Zoology
Life-history, morphology, and measurement data for Tarantula and Brown Recluse Spider.
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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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