However, canines' color vision is not limited to only two shades.
"Dogs just don't see as vivid colors as we do," says Sara Ochoa, DVM, a veterinarian and consultant for doglab.com. "
Dogs primarily perceive blue and yellow."
It is true that some dogs experience nausea and vomiting after eating grass.
Reason being, according to Ochoa, they throw up whenever they eat grass.
However, there are many additional reasons why dogs nibble on grass.
According to the professionals at The Puppy Academy, "often dogs just like to eat anything!" they remark.