Here are some randomly selected joke topics
Birds
What happened when the owl lost his voice?
He didn't give a hoot.
Dalmatians
Why are dalmatians no good at playing hide and seek?
Because they are always spotted.
Locked
Knock, knock.
Who's there?
Doris.
Doris who?
Doris locked that's why I'm knocking.
Bear
What do you get if you cross a small bear with a cow?
Winnie the Moo.
Aliens
"And this is the sound the aliens made..." (BEEP!)
Crab
Why was the crab sent to jail?
Because he kept pinching things.
Not Old
You're not old. You're chronologically challenged.
Cows
Knock, knock.
Who's there?
Tilly.
Tilly who?
Tilly cows come home.
Dracula
Why did Count Dracula visit his doctor?
Because he was always coffin.