Dogs Caught Cheating on Researcher’s IQ test
Cosmos Magazine has a story regarding researchers that have been using a test to measure intelligence among two year old children, primates, and other animals. Monkeys, dolphins and cats have been known to fail the test while dogs have actually done really well.
From Cosmos
“Dogs were a surprising exception, repeatedly passing the task in several studies in the 1990s. However, our study – involving 35 dogs of various breeds – showed they were using other simple cues to find the object and not ‘thinking’ or using logic after all,” Collier-Baker said. “
Because dogs were found to cheat, they had to change the way the test was presented, which then skewed many of their previous results. “This finding threatened the validity of studies with other species which also lacked these control conditions. Collier-Baker therefore went on to test two chimpanzees, four gibbons (siamangs) and a spider monkey.”
These dogs must have been smart as they knew how to take the shortcut to the ball or treat. 
