Great question! :D
"Eat" in Spanish is "Comer"
Examples of "Comer" in action -
The puppy wanted to eat his food.
Spanish -
El perrito queria comer su comida.
::::Let's try another one::::
Bobby eats his cereal.
Spanish -
Bobby come sus cereals.
Keep in mind that when "eat" is plural (eats), the Spanish word for that is "come".
↑ ↑ ↑ Hope this helps! :D