Learn Spanish (Latin America): El perro no come la manzana.

Spanish doesn't use helper words like "do" or "does" to make a negative sentence. To say that someone or something doesn't do an action, you simply put no directly in front of the verb. So, no come translates perfectly to "does not eat".

Can I put the no after the verb, like El perro come no la manzana?

No, in Spanish the rule for basic negation is very strict: the no must go immediately before the conjugated verb (come). The order will always be Subject (El perro) + no + Verb (come) + Object (la manzana).

Why does the verb end in "-e" (come) instead of "-o" (como)?

The verb changes its ending to match whoever is doing the action. Como means "I eat". Since the subject of this sentence is el perro (the dog), which counts as a "he" or "it" (third person singular), you have to use the matching ending for the verb comer (to eat), which is come.

Could this sentence also mean "The dog is not eating the apple"?