North American Porcupine vs North American Beaver
Quick answer
In a hypothetical one-on-one, the North American Beaver would most likely come out on top in most encounters, 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
Least Concern
Mammal
Least ConcernNorth American Porcupine vs North American Beaver compared
| Attribute | North American Porcupine | North American Beaver |
|---|---|---|
| Weight | 9 kg | 25 kg |
| Length | 80 cm | 1 m |
| Top speed | 3 km/h | 55 km/h |
| Strength | 20/100 | 50/100 |
| Deadliness | 25/100 | 10/100 |
| Intelligence | 40/100 | 62/100 |
| Lifespan | 18 yr | 20 yr |
North American Porcupine vs North American Beaver: common questions
Who would win in a fight, a North American Porcupine or a North American Beaver?
In a hypothetical one-on-one, the North American Beaver would most likely come out on top in most encounters, 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 North American Porcupine or the North American Beaver?
The North American Beaver is heavier, weighing around 25 kg compared with the other's 9 kg.
Which is faster, the North American Porcupine or the North American Beaver?
The North American Beaver is faster, reaching about 55 km/h versus 3 km/h.
Which lives longer, the North American Porcupine or the North American Beaver?
The North American Beaver typically lives longer, up to around 20 years compared with 18 years.
Sources & references
Size, speed, and conservation data are drawn from established zoological references. Compare full profiles for habitat, diet, and behaviour:
- North American Porcupine — full guide
IUCN Red List (Least Concern, Erethizon dorsatum)
- North American Beaver — full guide
IUCN Red List (Least Concern, Castor canadensis)
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