I have a Purugly and a Delcatty that have been living with me for years. recently i adopted a young lillipup from a rescue agency, and the mon’s don’t get along with him at all. he likes to chase Delcatty into hiding, and Purugly likes to stalk and and smack him whenever she can. i’m starting to believe that these kinds of pokemon really CAN’T get along after all

Oh no, it’s possible that they all can get along, but they have to have a particular chemistry, just like humans do with each other. Sometimes, cat pokémon and dog pokémon adore one another, and sometimes, they go at it like, well, cats and dogs. And sometimes, the latter occurs for no good reason at all.

Of course, other times, there may be a particular reason, so it would be worth it to observe your pokémon and see if there is a behavior that causes them to interact this way. It’s likely that your lillipup simply needs to be trained to not chase your delcatty, while your purugly needs to be trained to use better problem resolution skills.