These two male Hippos were in a prolonged dispute over territory. They would get really worked up, foaming at the mouth, opening and closing it like a marionette puppet. They seemed very unsure of their footing in the rocky river but positioned themselves in various places which each thought favored their position. Their fighting consisted of fast movements and opened jaws, but no actual bites. I read that this behavior can go on for hours and can include more contact, but this one lasted about 30 minutes a good part of which was spent maneuvering for position or working themselves up for a really convincing open jawed threat that would be sure to convince their rival not to mess with them. Eventually it worked! (Hippopotamus amphibius) (Sony a1, 70-200 f/4 @ f/4, 200mm, 1/1600 second, ISO 640)

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Make:	SONY
Model:	ILCE-1
Exposure:	0.001 sec (1/1600)
Aperture:	f/4.0
ISO Speed:	640
Focal Length:	200 mm
Lens:	FE 70-200mm F4 Macro G OSS II