Polydactyly

Todayโ€™s path rounds are on ๐ฉ๐จ๐ฅ๐ฒ๐๐š๐œ๐ญ๐ฒ๐ฅ๐ฒ!

๐–๐ก๐š๐ญ ๐ข๐ฌ ๐ข๐ญ?
๐๐จ๐ฅ๐ฒ๐๐š๐œ๐ญ๐ฒ๐ฅ๐ฒ is an increase in the number of digits on one limb or multiple limbs. This can range from one extra digit, most often seen in cloven hooved animals, to multiple extra toes, often seen in cats.

๐–๐ก๐จ ๐ ๐ž๐ญ๐ฌ ๐ข๐ญ?
Any species can get this! We most typically see this condition in dogs, cats, horses and cattle.

๐–๐ก๐š๐ญ ๐œ๐š๐ฎ๐ฌ๐ž๐ฌ ๐ข๐ญ?
This condition is typically genetic, with different modes of inheritance depending on the species. However, there are also some rare ๐ญ๐ž๐ซ๐š๐ญ๐จ๐ ๐ž๐ง๐ข๐œ (malformation causing) agents that can lead to polydactyly.

๐–๐ก๐ฒ ๐ข๐ฌ ๐ญ๐ก๐ข๐ฌ ๐š ๐ฉ๐ซ๐จ๐›๐ฅ๐ž๐ฆ?
Having extra toes isnโ€™t a problem in most cases! In large animal species the extra toe may interfere with normal movement, and require special attention to keep the hoof trimmed, but otherwise they donโ€™t cause many issues.

๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐ญ๐ซ๐ž๐š๐ญ๐ž๐?
Often these extra toes are just left alone, if they arenโ€™t bothering the animal. In some cases, they may be removed surgically if they are causing a problem.

๐๐ก๐จ๐ญ๐จ๐ฌ
1-2) Polydactyly in cats! So many toe beans ๐Ÿ˜
3-5) Polydactyly in cattle showing three hooves per leg instead of two.
6) Polydactyly in a llama!
7) Polydactyly in a pig!

๐’๐จ๐ฎ๐ซ๐œ๐ž๐ฌ
Maxie, G. Jubb, Kennedy and Palmerโ€™s Pathology of Domestic Animals, Volume 1. Sixth Edition.

Photos 1, 3 ยฉ University of Calgary Diagnostic Services Unit.
Photos 2, 4-7 ยฉ Noahโ€™s Arkive contributors Leipold, Edwards licensed under CC BY-SA 4.0.

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