In "The Accidental Pup Star", Rebound became excited when her person, Agatha, returned home and broke into song, which was recorded by a little girl. When Rebound told Lucky about it, she was afraid of how much trouble she would be in. While Cookie and Squirt felt it was a reason to panic, Lucky told her it was no big deal, and just to be more careful the next time. There's a good reason Lucky didn't get angry. Talking to a human — his human — was how he was able to return to the pound at the end of "Lucky Gets Adopted".
In "Toyoshiko!", Lucky insisted that the namesake robot dog's memory needed to be erased to keep humans from finding out about their operation, a fact Toyoshiko ultimately comes to believe herself. The problem is that the Pound Puppies are a worldwide network of dogs who not only talk, but communicate with each other using electronic equipment, sneak numerous puppies (not to mention themselves) in and out of the pound, don costumes and blend in with human society, take trips of thousands of miles, etc., all without the knowledge of humans. Hence, the plot of the episode rests on the fact that the Pound Puppies could do all those things without people being any wiser, yet would be unable to keep a robot dog hidden.
Similar logic in "When Niblet Met Giblet" makes their budding romance even sadder. Considering the Pound Puppies have placed puppies as far away from... wherever they are... as Milwaukee and Alaska, not to mention Lucky's rescue mission to Canada, and given their proficiency at creating logistical solutions out of human transportation, it would seem that what amounts to about a day's foot travel would be a piece of cake to arrange.
Had McLeish's mother ever actually made mince meat pies out of dogs?
None of those jars McLeish trapped everyone in in "The Truth Is In Hear" had air holes in the lids, does that mean he was willing to suffocate all those dogs, Olaf and HIS OWN MOTHER on the off-chance they were really aliens? Granted the jar HE was trapped in had air holes, but the Pound Puppies could've made those, NONE of the jars HE trapped everyone in even HAD THOSE!
Crazy Cat Man Bernie's cult of cats in "Hello Kitten" raises enough Fridge Horror in itself. Spoons barely avoided their fate. Even worse, Ace was perfectly fine with dumping her off with this loon as long as she never was around a dog.