They open it very wide.
You can't. You can only open your mouth as wide as your jaw will let you.
Nothing unusual. The beak is sharp for tearing flesh. Their mouth parts should be essentially the same as any other bird.
Open the mouth wide.
Jaguars are able to open their mouths up to 100 degrees wide, allowing them to deliver powerful bites to their prey. This wide gape enables them to effectively catch and kill a variety of animals in their natural habitat.
roughly 65 degrees
Wide open. A gaping hole is a wide open hole. A gaping mouth is one which is hanging open, usually from astonishment.
Very wide. Approximately 69m.
hippos can open there about 3 feet or more depending on the size
He stood there with his mouth gaped open, utterly shocked by what he had just heard.
Wide enough to swallow an average 4th grader.
It's physically impossible to swallow with your mouth wide open, as the act of swallowing involves your muscles closing off the airway to prevent food or liquid from entering the lungs. If your mouth is wide open, your swallowing reflex will not be triggered.