Frog (horse anatomy)

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The frog is triangular in shape.

The frog is a part of a horse hoof, located on the underside, which should touch the ground if the horse is standing on soft footing. The frog is triangular in shape, and extends midway from the heels toward the toe, covering around 25% of the bottom of the hoof.[1][page needed]

Digit remnants[edit]

A 2018 study on horse foot morphology has suggested that the frog is actually composed of remnants of digits II and IV. This indicates that horses are not truly monodactyl and posits a more complex formation of the horse foot than simple side toe reduction.[2]

See also[edit]


  1. ^ King, Christine; Mansmann, Richard (1997). Equine Lameness. Equine Research. ISBN 9780935842128.
  2. ^ Solounias, Nikos; Danowitz, Melinda; Stachtiaris, Elizabeth; Khurana, Abhilasha; Araim, Marwan; Sayegh, Marc; Natale, Jessica (2018). "The evolution and anatomy of the horse manus with an emphasis on digit reduction". Royal Society Open Science. 5 (1): 171782. doi:10.1098/rsos.171782. PMC 5792948. PMID 29410871.