animal
artistic
artwork
background
biological
biology
canadensis
canadian
captured
carnivorous
common
crepuscular
eat
engraving
enhydra
etching
fauna
fish
float
green
hunt
hunter
illustration
life
lontra
lutra
lutrinae
lutris
mammal
mustelidae
natural
nearctic
north
otter
outdoor
picture
polygyny
pond
pool
prey
prince
river
semiaquatic
sketch
white
wild
wildlife
zoo
zoological