Donkey felt a chunk of vomit in his throat.

"Donkey, can you do that in the toilet?" said Shrek.

Donkey rushed to the bathroom and began to barf.

When he came out he wasn't feeling any better.

"Donkey, I think you need to see the vet," said Fiona.

"What's a vet?" asked Donkey.

"You know that nice lady I take you to for checkups and shots? She's the vet."

"No! I don't want to go to vet! I hate the vet!"

"Okay, want to go to Friar's Frat Boy and get some burgers instead?"

"Yeah! I love burgers!" said Donkey running happily to the carriage.

Fiona got inside and closed the door.

"To the animal clinic," Fiona told the horseman.

"Hey! You tricked me," said Donkey as the horses started pulling. "Noooooo!"

At the waiting room, Donkey gulped nervously as he saw a dog leaving the vet's office with a cone around his neck.

After a few more minutes, it was Donkey's turn.

"Please don't take me! I don't need to see the vet! I'm feeling fine!"

"Hold still, sweetie," said the vet, but Donkey was unable to stop jumping and kicking, so she left to get her tranquilizer gun. She got a dart, filled it with donkey tranquilizer, and loaded it into the gun, before returning.

"What is that? Is she going to put me down? I don't want to die!" said Donkey cluelessly.

The vet shot him in the butt with the dart, and after a few minutes, Donkey was much less panicky, but still semi-conscious.

The vet then inserted a thermometer into his rectum, which was easy as he was now sedated.

"Looks like he has a fever," she said.

"What should I do? asked Fiona.

"Keep him in a cage and make sure he gets a lot of rest. And be sure you don't feed him anything for a few days."

"What about soup?"

"No. You can only give him this," she said handing Fiona a bottle of chewable phenylbutazone tablets.