happy hippopotamus

africa african aggressive amphibius animal bath bathing brown canines closeup common conservation creature east ecology environment exotic fauna gaping habitat herbivore hippo hippopotami hippopotamus hippopotamuses history hostile immature impressive incisors ivory kenya kenyan lake mammal medium mouth natural nature nobody outdoors pink pool reserve river roar roaring safari south species stream striking sunny sunshine tanzania teeth tourism travel ungulate vegetarian wallow wallowing water wet wild wilderness wildlife young