A shiver of sharks
an army of caterpillars
a sleuth of bears
a quiver of cobras
a romp of otters
an unkindness of ravens
a streak of tigers
a knot of toads
a hover of trout
a smack of jellyfish
a cackle of hyenas
a leap of leopards
a deceit of lapwings
an intrusion of cockroaches
a bask of crocodiles
a gulp of cormorants
a cete of badgers
a shrewdness of apes
a convocation of eagles..