Dogs have fewer taste buds than humans, but they have the same taste receptors, which include sweet, sour, bitter, salty, and spicy. Although dogs do not enjoy the taste of spicy foods in the same way some humans do, and spicy foods can upset their stomachs. Dogs have fewer taste buds than humans, but they have the same taste receptors, which include sweet, sour, bitter, salty, and spicy. Although dogs do not enjoy the taste of spicy foods in the same way some humans do, and spicy foods can upset their stomachs.