Dallas Seavey poses with his lead dogs Reef (left) and Tide after finishing the Iditarod Trail Sled Dog Race in Nome, Alaska, in March 2016. Seavey denies he administered banned drugs to his dogs in this year's race and has withdrawn from the 2018 race in protest.
At almost 17 inches, this boxer named Brandy had the longest tongue on a dog ever, according to Guinness World Records. She is pictured with owner John Scheid in Sterling Heights, Mich., in 2001.
Amy Walters from Copperas Cove, Texas, with a horse she rode as she rounded up lost cattle and brought them to the makeshift shelter in Beaumont, Texas.
Brian Mann/North Country Public Radio
Celebrations that include loud fireworks often terrify dogs. Though there's not yet much science to confirm it, some veterinarians and pet owners say CBD, an extract of hemp or marijuana, can ease a pet's fear.
Researcher Alexandra Horowitz plays with her dogs Finnegan and Upton. She studies how dog's sense of smell influences their view of the world.
Vegar Abelsnes/ Courtesy of Alexandra Horowitz