Note: All images are put in order.
Sniffles and his pet hamster.
Russell and his pet piranha.
That fish is no chicken when it comes to food.
That fish is still hungry.
The hamster is pushed out of harm's way.
Giggles scolds the piranha.
Normally, fish are scared of cats, not the other way around.
The food chain is out of whack here.
You may want to look into that cup before drinking it.
"I'll drink this cup later in class..."
Lumpy explaining the HTF digestive system.
"Sigh... School is boring..."
"It's time to drink that cup."
"Learning is thirsty work."
Giggles needs the toilet.
"Um... Mr. Lumpy... I need to go to the bathroom...!"
Boys' room or girls' room?
Hmm... Flaky has no eyelashes, but sounds like a girl. Which one?
Flaky is sent for a spin.
Giggles choosing a stall.
Petunia doing her end of business in school, and she reads the newspaper?
"What is going on in there?"
That blood puddle must mean something.
"I've gotta get outta here...!"
You'd think Petunia of all people would check for toilet paper before doing her business.
Petunia looks around for something else to use.
Like maybe that newspaper?
Something just bit her butt.
"AAAH! AAAAAAAAAAAH! AAAAAAAAAAAH!"
The janitor's gonna have quite a mess to clean later.
"Lalala... Washing my hands...!"
Hmm... no blood, no screaming... What's she doing in the boys' restroom?
Flaky before the fright of her life.
Flaky gets her hands chewed off by Russell's piranha.
Only now does the water turn red with blood.
Russell knows he won't be the only student with a hook hand anymore.
The piranha flies off Flaky's bony hand...
...and back into its bowl.
Did Russell ever notice his fish was missing?
"The play's starting, hurry!"
He's not fooling around this time.
Lumpy brings Russell backstage.
"Sorry, but this play isn't about pirates."
As you can see, Russell has no ears when hatless, but he has a curly hair on top.
"Which hat was it, again?"
No need for stage fright. Only three people showed up, and one of them's blind.
Russell is finally a star.
He would make one convincing space pirate.
What is holding on those ears?
Okay, there are other things to worry about.
Never did Russell think he'd be betrayed by his own pet.
Mime opens his eyes for a brief moment.
Mime realizes his friend's in trouble. As for Sniffles, he may be going deaf (ironic considering he has four ears).
Mime ducks at the right time.
Where are Sniffles' eyes?
Russell's head after being eaten by his piranha.
Handy, The Mole and Pop cheer, and they don't realize (or care, likely for Handy) that Russell, Mime, and Sniffles died.
Looks like this is his piranha's new home... for now.