Despite our undying devotion to our four-legged friends, many of us remain ignorant of their requirements.
A happy animal is immediately recognizable to the majority of us by its frantically waving tail.
The Healthy Pet Club points out, nevertheless, that wagging the tail can signify a wide range of emotions, such as joy, aggression, or even nervousness.
So, before you assume a dog is happy and friendly, watch its body language and other signs.
It is commonly believed, although not necessarily true, that dogs cannot perceive color.
Their color range is narrower than ours, yet they can still perceive some colors.
Their eyes are primarily tuned to detect movement in low light, and they mostly see in blue and yellow colors.