The emotions included basic ones like "happy" and "sad" as well as more complex ones such as "sadly angry" or "happily surprised." "Admittedly, these images look weird," Martinez said.

The dogs were split into two groups – with half trained to recognize happy faces, the other group, angry ones (Photo courtesy of Discovery News) ‘Dogs can distinguish between happy and angry ...

Photo: flickr/instantvantage Some dog owners swear that they can tell whether their dog is happy or sad by the expression on the pooch's face. But how about the reverse -- can dogs tell whether their ...

The dogs selected the angry and happy faces correctly enough that it can’t be attributed to chance—70 out of 100 times, the canines picked the right expression.

The Happy Pets app can tell a chihuahua from a blueberry muffin. (Supplied) To unlock the inner lives of dogs and cats the app developers had to first clear some technical hurdles.

Conventional scientific understanding is that there are six, but new research suggests there may only happy, sad, afraid/surprised, and angry/disgusted.

Dogs can differentiate between humans’ angry and happy faces Research provides the first evidence that animals can recognise our expressions Tom Bawden Thursday 12 February 2015 19:04 GMT 0 Comments ...

In the experiment, they showed arrays of human faces to 78 men and 78 women, using photos of angry, fearful, happy, sad, surprised, disgusted or neutral expressions.

New research suggest we only have four. The widely held scientific assumption is that we have six emotions: happy, surprised, afraid, disgusted, angry, and sad.

Sad Brain, Happy Brain Published Sep 12, 2008 at 8:00 PM EDT Updated Mar 13, 2010 at 6:13 PM EST By Michael Miller Newsweek Is A Trust Project Member ...

Original Article Published: 15 September 2010 Oxytocin Decreases Aversion to Angry Faces in an Associative Learning Task Simon Evans, Sukhwinder S Shergill & Bruno B Averbeck ...