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Walrus tusks are upper canine teeth that grow throughout life, but ongoing growth of a living tusk is not the same as replacing one after it is lost. A rare managed-care report describes new tusk formation from residual pulp after surgical removal, followed by a serious fracture complication; the typical outcome after natural breakage or complete loss is not established.
Key takeaways
- Walrus tusks are elongated upper canine teeth in both males and females, and they grow throughout life.
- Continued growth in a living tusk does not prove that a fully lost tusk will be replaced.
- One managed-care case reported new tusk formation from residual pulp after surgical removal, but the new tusk later fractured and displaced underlying bone. This unusual case does not establish a usual outcome.
- The available evidence does not establish how often a naturally broken or fully lost tusk resumes growth or is replaced.
- Walrus tusks help with hauling onto ice or rocks, moving ice, and social display and fighting; walruses use whiskers and suction to feed.
How does a walrus tusk grow?
Walrus tusks are long upper canine teeth that grow throughout life. The Alaska Department of Fish and Game describes them as “two ivory tusks, which are long upper canine teeth that grow throughout their life.” This establishes ongoing growth in existing tusks, not what happens after one is completely lost.
Growth of a living tooth and regeneration after loss are different questions. The available evidence reviewed here does not establish how often a naturally broken tusk continues growing, whether growth can continue when the pulp is damaged, or whether a new tusk typically replaces one lost naturally.
Can a walrus grow back a broken or lost tusk?
The careful answer is that a living tusk grows throughout life, but the usual outcome after natural breakage or complete loss is unknown from the available walrus-specific evidence. Do not interpret lifelong growth as proof that a lost tusk will reliably grow back.
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A 1990 conference abstract describes one unusual case: a female Pacific walrus had both tusks surgically removed, and a new tusk formed from residual pulp. That tusk later fractured and displaced underlying maxillary bone. This was a managed-care case after surgery, not evidence that ordinary natural tusk loss is routinely followed by replacement.
| Situation | What the evidence says | What remains unknown |
|---|---|---|
| Living tusk | Walrus tusks grow throughout life. | This fact alone does not predict what follows complete loss. |
| Naturally broken tusk | Walrus-specific sources reviewed do not establish the typical outcome. | How often growth resumes and how pulp damage affects it. |
| Complete natural loss | The typical outcome is not established in the reviewed evidence. | Whether and how often a new tusk forms. |
| Surgical removal with residual pulp | One managed-care case reported new tusk formation. | How applicable that exceptional case is to other walruses or natural injuries. |
What do walruses use their tusks for?
According to the Alaska Department of Fish and Game, walruses use tusks to help pull themselves onto rocks or ice, move ice to create a diving opening, and interact socially through display and fighting. Walruses do not use their tusks to dig on the seafloor: they locate prey with their whiskers and use suction to extract soft-bodied prey.
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Can veterinarians treat walrus tusk damage?
Veterinary management of tusks has been reported in captive walruses, but the evidence is limited. A PubMed-indexed report describes metal crowns used for worn tusks in two young captive walruses; examinations and radiographs found that their pulp chambers were not exposed. This narrow report is not a general repair protocol and does not support do-it-yourself treatment.
For a wild walrus, do not approach or attempt to inspect an injured animal. In managed care, qualified veterinary and animal-care professionals should assess tusk injuries.
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Can a walrus grow back a broken tusk?
A walrus tusk grows throughout life, but the available evidence does not establish how often growth resumes after a natural break or what happens when the pulp is damaged. One unusual post-surgical case reported new tusk formation from residual pulp, followed by a serious complication; it does not establish the usual outcome.
What happens if a walrus loses a tusk?
The typical outcome after complete natural loss is not established in the sources reviewed. Lifelong growth of existing tusks should not be taken as proof that a lost tusk will be replaced.
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Are walrus tusks used for feeding?
The Alaska Department of Fish and Game says walruses use their tusks to haul out, move ice, and in social interactions. Walruses use whiskers to locate prey and suction to extract soft-bodied prey, rather than tusks to dig on the seafloor.
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Walrus tusks are upper canine teeth that grow throughout life, but that does not establish reliable replacement after natural breakage or complete loss. A single managed-care case reported new formation from residual pulp after surgical removal, with a later serious complication; the typical outcome after natural tusk loss remains unknown in the reviewed evidence.
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