explorative
exploratory
unofficial
unsound
irresponsible
unsafe
worthless
wildcatted
wildcatting
aggressor
assailant
assaulter
attacker
oil well
oiler
badger
beaver
bobcat
brown-and-white
caribou
catamount
coon
cougar
coyote
field-mouse
hedge-sparrow
hippopotamus
hyaena
hyena
ichneumon
jackal
lynx
mink
murex
muskrat
onca
opossum
ork
otter
panther
paroquet
polar bear
polecat
porcupine
puma
racoon
roebuck
sea otter
skunk
tigress
weasel