Carl Zimmer

The Loom

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Dogs carrying the genetic variant most associated with obesity, DENND1B, had around 8% more body fat than those without it. (Image Credit: University of Cambridge)


Chocolate Labrador being offered food

Learn more about a gene called DENND1B, an obesity gene humans and Labrador retrievers share. 

Labrador Retrievers and Humans May Share the Same Obesity Gene

Dog onboard a flight on a plane

As air travel becomes increasingly commonplace for animals, learn what advice veterinarians want you to know before boarding the plane.

Are Planes Safe for Dogs and Cats? Here’s What to Know About Pet Travel

(Credit: Wirestock Creators/Shutterstock) 

Sierra Nevada Bighorn Sheep

Learn more about the different species the NPS has helped bring back from extinction. 

5 Endangered Species the National Park Service Helps Protect 

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