But after looking at all ice cream-related Tweets from March 1 to May 18, they determined which other flavors were the most Tweeted-about. And you might be surprised at the results! Coffee and Cookie Dough dominate in the most states, but Brownie and Strawberry had fervent supporters as well.
Consequently, the dog's world consists of yellows, blues, and grays. When a human perceives a red object it appears as yellow to the dog, while a green object appears as white, a shade of gray. This white region, also called the neutral point, occurs around 480 nm in visual spectrum.
To determine whether dogs can see color, researchers taught dogs to pick the odd-colored circle out of a choice of three circles. So if they showed colors that the dogs could not distinguish, they would fail at the task, but if they chose colors that the dogs could tell apart, the dogs would perform consistently well.