Der Hund verletzt sich am Bein.

The dog injures his leg.

Breakdown of Der Hund verletzt sich am Bein.

• der Hund: the dog
• sich: itself
• am: at the; (masculine or neuter, dative)
• das Bein: the leg

Questions & Answers about Der Hund verletzt sich am Bein.

Why do we use sich in Der Hund verletzt sich am Bein?

sich is a reflexive pronoun. It shows that the subject (the dog) and the object (the one being injured) are the same.

• Der Hund verletzt sich am Bein.
  → The dog injures himself on the leg.

Without sich, the verb verletzen would normally need some other object:

• Der Hund verletzt die Katze.
  → The dog injures the cat.

So sich verletzen = to injure oneself. The reflexive pronoun always refers back to the subject.

Could I say Der Hund verletzt das Bein instead?

Grammatically yes, but it changes the meaning and sounds odd without more context.

• Der Hund verletzt das Bein.
  Literally: The dog injures the leg (whose leg? We don’t know.)
• It sounds like the dog is injuring some leg, not clearly his own.

If you want to specify it’s his own leg without the reflexive form, you’d say:

• Der Hund verletzt sein Bein.
  → The dog injures his leg.

However, in practice, German strongly prefers the reflexive construction:

• Der Hund verletzt sich am Bein.
• Der Hund verletzt sich das Bein.

These are the natural ways to say that the dog injures his own leg.

What exactly does verletzt mean here?