Bewear? It's not a pokemon Armin has a lot of experience with. Normal from the looks of it.

"Circinus do another discharge."

He won't knock the Bewear out, not with Endure active, but hopefully, it can take it down some. And if it is a different type than Armin is thinking --really, it's not like he knows the whole pokedex back to front!-- its reaction to Circinus' electric attack might show that.