Shelley, here's the list:
MAMMALS
Apes - A shrewdness
Asses - A pace
Badgers - A cete
Bats - A colony
Bears - A sloth, sleuth
Buffalo - A gang, an obstinacy
Cats - A clowder, a pounce
Kittens...A kindle, litter, an intrigue
Cattle - A drove, herd
Deer - A herd, bevy (refers to roe deer)
Dogs (young)- A litter
Dogs (wild) - pack
Dogs (curs) - cowardice
Dogs (hounds) - cry, mute, kennel, pack
Elephants - A herd
Elk - A gang
Ferrets - A business
Fox - A leash, skulk, earth
Giraffes - A tower
Goats - A tribe, trip
Gorillas - A band
Hippo - A bloat
Horses (colts) - A team, harras, rag
Horses (single owner) - stud
Horses (ponies) - string
Hyenas - A cackle
Kangaroos - A troop
Leopards - A leap
Lions - A pride
Moles - A labor
Monkeys - A troop, barrel
Mules - A pack, span, barren
Otters - A romp
Oxen - A team, yoke
Pigs (young) - A drift, drove, litter
Pigs (swine) - sounder
Pigs (hogs) - team, passel
Pigs (boars) - singular
Porcupines - A prickle
Rabbits (domestic) - A colony, warren, nest, herd
Rabbits (hares) - A down, husk
Rabbits (young) - litter
Rhino - A crash
Seals - A pod, herd
Sheep - A drove, flock, herd
Squirrels - A dray, scurry
Tigers - A streak
Whales - A pod, gam, herd
Wolves - A pack, rout or route (when in movement)
REPTILES
Crocodiles - A bask
Frogs - An army
Toads - A knot
Turtles - A bale, nest
Snakes - A nest
FISH
Fish - A draft, nest, school, shoal
Bass - A shoal
Herring - An army
Sharks - A shiver
Trout - A hover
INVERTEBRATES
Ants - A colony
Bees - A grist, hive, swarm Caterpillars - An army
Clams - A bed
Cockroaches - An intrusion Flies - A business
Gnats - A cloud, horde
Grasshoppers - A cloud
Hornets - A nest
Jellyfish - A smack
Locusts - A plague
Oysters - A bed
BIRDS
Birds (in air) - A flight
Birds (on ground) - volary, brace
Bitterns - A sedge
Buzzards - A wake
Bobolinks - A chain
Chicks - A brood; clutch
Coots - A cover
Cormorants - A gulp
Cranes - A sedge
Crows - A murder, horde
Dotterel - A trip
Doves - A dule
Doves (turtle) - pitying
Ducks (in air) - A brace, flock
Ducks (on water) - raft
Eagles - A convocation
Finches - A charm
Flamingos - A stand
Geese - A flock, gaggle
Geese - (flying) - skein
Grouse - A pack
Gulls - A colony
Hawks- A cast, kettle, boil
Herons - A sedge, a siege
Jays - A party, scold
Lapwings - A deceit
Larks - An exaltation
Mallards - A sord, brace
Magpies - A tiding, gulp, murder, charm
Martins - A richness
Nightingales - A watch
Owls - A parliament
Parrots - A company
Partridge - A covey
Peacocks - A muster, an ostentation
Penguins - A colony
Pheasant - A nest, nide, nye, bouquet
Plovers - A congregation, wing
Ptarmigans - A covey
Rooks - A building
Quail - A bevy, covey
Ravens - An unkindness
Snipe - A walk, a wisp
Sparrows - A host
Starlings - A murmuration
Storks - A mustering
Swallows - A flight
Swans - A bevy, wedge
Teal - A spring
Turkeys - A rafter, gang
Widgeons - A company
Woodcocks - A fall
Woodpeckers - A descent