The images seen by dogs are different from those seen by humans. First of all, dogs can only see two primary colors, namely yellow and blue, while humans can see three colors. Secondly, the picture that seems very smooth to us is very laggy in the eyes of dogs, because for humans, it is already very smooth to see 30 pictures per second, but for dogs, it must be slow to avoid lags. It sees 80 pictures per second.