close-up of partially submerged ornate head of watchful caiman

alligator amphibious animal beautifully black brazil caiman carnivore closeup crocodilus crocodylian danger dangerous eye eyeing gator h2o head herp mudbank muddy nose ornate pantanal partially pattern patterned predator prey reptile reptilian riverbank scales scaly scarey snout submerged tetrapod threaten threatening tropical vertebrate vicious watchful water wild wildlife yellow