Copy-cat evolution: Divergence and convergence within and between cat and dog breeds.

Authors

Abby Grace Drake, Liam J Revell, Christian Peter Klingenberg, Jimmy C Lattimer, Nathan C Nelson, Martin J Schmidt, Allison L Zwingenberger, Joshua K Moyer, Jonathan B Losos

Published in

Proceedings of the National Academy of Sciences of the United States of America. Volume 122. Issue 18. Pages e2413780122. May 06, 2025. Epub Apr 28, 2025.

Abstract

Many domesticated species exhibit remarkable phenotypic diversity. In nature, selection produces not only divergence but also convergence when organisms experience similar selective pressures. Whether artificial selection during domestication also produces convergence has received little attention. Three-dimensional shape analysis of domestic cat and dog skulls demonstrated convergence at multiple levels. Most broadly, cats and dogs have both diversified greatly: equaling or exceeding the morphological disparity among all modern-day species of their respective families. Moreover, as a result of artificial selection, some breeds of these two phenotypically distinct species, evolutionarily separated for 50 My, have converged to such an extreme extent that they are more similar to each other than they are to many members of their own species or their ancestors, a phenomenon never previously observed in domesticated species. Remarkably, this convergence evolved not only between dogs and cats but also multiple times within each taxon.

PMID:
40294264
Bibliographic data and abstract were imported from PubMed on 29 Apr 2025.

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