The presence of bumps on the tongue is quite normal. Known as fungiform papillae, these tongue bumps are present on the sides and top of the tongue. The color of these bumps is same as the tongue, and they give a rough texture to the tongue. These bumps contain temperature sensors and taste buds, which help in eating food. If you look at normal tongue bumps pictures, you will notice that these are natural and quite essential. However, problems occur when the bumps become larger. Enlargement of papillae can occur due to various reasons. Here are some of the common causes of enlarged tongue bumps.