South Africa
Hippopotamus can be very aggressive, though it's thought that this behaviour is play fighting between an adult and juvenile. Canon EOS-7D II with 100-400mm f/4.5-5.6L IS II lens.
Ref: Hippopotamus-2016-17
Date: 31/08/2016
Location: Lake St. Lucia, KwaZulu Natal
Photographer: Christine Moore