Nature - Season 25 - Eps 12: Dogs That Changed The World: Dogs by Design
This episode details the explosion of the basic working dog types into the roughly 400 breeds known today; explores concerns about today’s competitive breeding and its effect on dogs’ health and well-being; and outlines dogs’ potential role in medical care for human beings.
About Nature

Title: Nature
First Air Date: 1982-10-10
Last Air Date: 2025-05-07
Status: Returning Series
Rating: 8.1/10 (from 37 votes)
Language: EN
Seasons: 44
Total Episodes: 679
Network: PBS
Genres: Documentary, Family
Production Companies: Thirteen, Coneflower Films Studios, Trebitsch Produktion International GmbH, Rubin Tarrant Productions
Synopsis
Consistently stunning documentaries transport viewers to far-flung locations ranging from the torrid African plains to the chilly splendours of icy Antarctica. The show's primary focus is on animals and ecosystems around the world. A comic book based on the show, meant to be used an as educational tool for kids, was briefly distributed to museums and schools at no cost in the mid-2000s.