baa

bang

bark

beep

belch

boing

boom

brring

bubble

burp

buzz

cackle

chirp

chomp

chortle

chuckle

clang

clap

clash

clatter

click

clip clop

clunk

cock a doodle doo

cough

crackle

creak

croak

crunch

ding dong

drip

fizz

fizzle

flutter

gasp

glug

groan

growl

grunt

guffaw

gurgle

hiss

honk

hoot

howl

hum

ker-ching

knock knock

miaow

mmm

moan

mumble

munch

murmer

mutter

neigh

oink

parp

ping

pitter patter

plink plonk

plop

pop

purr

quack

ribbit

rip

roar

rumble

rustle

screech

shush

slap

slither

smack

smash

snap

snarl

snore

snort

snuffle

splash

splat

splatter

splosh

splutter

squawk

squeak

squelch

thud

thwack

tick tock

trickle

twang

tweet

waffle

whimper

whirr

whizz

whoosh

woof

yawn

yelp

zip

 

 

My suggestions:

 

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