Is the Irish wolfhound bigger than a horse?

No, Irish wolfhounds are not bigger than horses.

While Irish wolfhounds are the tallest dog breed in the world, they are still significantly smaller than most horses.

* Average Irish Wolfhound height: 32-34 inches at the shoulder

* Average horse height: 58-64 inches at the shoulder (for a standard horse)

This means an average horse is nearly twice as tall as an average Irish wolfhound.