FRIDAY, March 1 (HealthDay News) -- It's a dog-see-dog world. With no sniffing involved, dogs can recognize the faces of other dogs among the faces of humans and other animal species, according to a new study.
Researchers in France found that dogs could pick out fellow dogs and put them in a group of their own, regardless of their breed. They did this through visual cues alone, revealed the study, which relied on computer screen images to test recognition.
The study was published online Feb. 14 in the journal Animal Cognition.
Previous research has shown that some animals are more attracted to members of their own species, according to a journal news release. However, the study authors noted that domestic dogs have the largest morphological variety among all animal species, with more than 400 registered pure breeds of dogs.
To test their ability to recognize their own species, nine pet dogs were shown 144 pairs of pictures of various dog breeds and cross-breeds along with 40 different animals and humans.
All nine dogs were able to form a visual category of dogs despite the wide diversity in the breeds they were shown, according to researchers led by veterinarian Dr. Dominique Autier-Derian, of the LEEC and National Veterinary School, in Lyon.
"The fact that dogs are able to recognize their own species visually, and that they have great olfactory discriminative capacities, insures that social behavior and mating between different breeds is still potentially possible," the study authors wrote.
The Stanford Encyclopedia of Philosophy has more about animal cognition.
SOURCE: Animal Cognition, news release, Feb. 14, 2013
be well, feel better
The right nutrition and three squares a day will help you lose fat fast!
Don't undermine the efforts of your loved ones who are trying to slim down.
If you've opened a SkyMall lately, you know there are dozens of products out there designed to clean indoor air. But do they actually work? We asked the experts what you really need.
A review of the eight biggest headlines of the year
From sleeping in to using vodka in place of hand sanitizer, check out the surprising stay-well secrets that real experts swear by.
In the dregs of winter it's easy to get down. So we reached out to Keri Glassman, nutritionist and author of The New You and Improved Diet, for some tips on how to keep those blues at bay.
Eat more and get slimmer (we promise!) by shopping from this list of truly satisfying, cravings-curbing foods.
How to fight colds, heartburn, joint pain, allergies, and other ailments by choosing the right food.