Courage the Cowardly Dog

The Thinker, though held in Paris, is not in the Louvre Museum. It is, in fact, held at the Musee Rodin.

In "So in Louvres Are We Two," an expressionistic painting called 'The Scream' was shown in Louvres Museum. But 'The Scream' is actually housed in an art museum in Norway.

"So in Louvres Are We Two" goofs: Mars and Venus are not next-door planets, it's impossible that they align. When Mars and Venus disalign, the pictures go back to normal and Courage helps Muriel get out of the picture. How did they go in the farmhouse picture if the planets are re-aligned?

When Courage is trying to make it back to Earth with Muriel, he takes Tulip's red bandage and floats to the ground. He enters the ship with the bandage, but when it shows Courage getting to the bike, the bandage is missing.

In "Katz Under the Sea", Katz said that he will swim to shore, but cats hate water.

In "Curtain of Cruelty," Muriel went to the store to buy her ingredients for make her fabric softener. At the store, the softener is already there. But at the Old Man's Lab, Courage pulls out the ingredients from Muriel's purse.

In "Curtain of Cruelty," Floyd is operating the curtain, but he is also in a crowd scene while Eustace made his speech.

Courage actually remembers Katz in "Katz Under the Sea," but doesn't in previous episodes.

In "Scuba Scuba Doo," Eustace never called Courage a stupid dog, rather, he called him an Idiot dog, and a lousy stinkin' dog.

When Courage turned on the giant vacuum, the remote got sucked in, but after the garbage got sucked in, Courage turned off the vacuum with the remote. Didn't it get sucked in?

According to the segment "Windmill Vandals," if the windmill stops, vandals attack. Vandals didn't attack in "Conway the Contaminationist" when the windmill stopped turning.

In "Hard Drive Courage," the button "X" key is in the middle row. But it's suppose to be on the bottom row next to "Z" and "C."

In "The Sandman Sleeps," when Eustace takes a bite of the egg, he spits it out, but it in the next scene, his egg is magically on his plate!

Muriel tells Courage that she can't hear him without her glasses. She can't see without them, not hear without them.

The TV guide entry for this episode incorrectly states this:
The townsfolk of Nowhere turn grey and depressed after being hit by Dr. Zalost's shower of pink cannonballs.

Dr. Zalost's cannonballs were black. The pink ones turned the town back to normal.

When Dr. Zalost gives Courage his change while playing hangman, he gives him a twenty dollar bill instead of a five.

The old man that suffered a heart attack in "The Shadow of Courage," is shown as one of the unhappy people of Nowhere.

This is one of the few episodes where Eustace's mother doesn't lose her wig.

When Eustace looked at a picture of his father, he claimed he didn't see any resemblance of himself. His father looked like Eustace, only he had a beard, and Eustace didn't notice that?

When Courage and Ma Bagge fall off the cliff, Ma is on the back of the boat and Courage on the other side. But when they hit the ground, they switch.