Contact: Lee Siegel
University of Utah
Caption: University of Utah biologists K. Gordon Lark and Kevin Chase were part of a multi-institutional team that identified ancient genetic material responsible for making small dogs small. Here, Chase plays with his toy poodle-Maltese mixes, Bonbon and Fille, while Lark's medium-sized Portugese water dog, Mopsa, rests at Chase's feet.
Credit: Diana Chase, University of Utah
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Related news release: Why small dogs are small