These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Villain Decay: Katrina was originally a fairly cunning opponent, willing to go to any lengths to harm/destroy the Pups. However, her motive was altered to simply "locking them all up FOREVER" after she got control of the pound in the second season... possibly because the cunning Katrina would've been a much greater threat.
Ho Yay: Reflex's condition causes him to run around in trance and kiss anyone in sight regardless of gender (or even species), so male dogs also fall victim to his hugs and kisses.
So Bad, It's Good: Some elements of it, mainly revolving around the villain's nonsensical plan.
Suspiciously Similar Song: The songs essentially use the same tune as 1950s classics such as "Let's Go to the Hop" and "Duke of Earl".
They Just Didn't Care: The quicksand looks nothing like quicksand, and Collette appears with Cooler and the gang even though she was seen being captured by Lumpy and Bones a few minutes before then. One could argue the whole movie is this and nothing else.