Animal Sounds:
1. Meow - Cat
2. Woof - Dog
3. Moo - Cow
4. Oink - Pig
5. Baa - Sheep
6. Quack - Duck
7. Cluck - Chicken
8. Roar - Lion
Nature Sounds:
9. Sizzle - Frying food
10. Crackle - Fire
11. Drip - Water dripping
12. Splash - Water hitting a surface
13. Whoosh - Wind blowing
14. Rumble - Thunder
Other Sounds:
15. Bang - A door slamming shut
16. Buzz - A bee flying
17. Click - A mouse click
18. Tick-tock - A clock
19. Screech - Tires skidding
20. Wham - A heavy object falling
Remember, onomatopoeia can be subjective, and what sounds like one thing to one person might sound like something else to another.