Well, do watch it sometime in the future, though. Good fun. :D
and ahaha, sadaharu is hilarious. I love the dog oh so much. You'll truly understand how precious he is if you see the latest series, Gintama' Enchousen. Srsly, I've never loved any dog in an anime more than this guy <3 An episode or two and you'll meet another hilarious character - Elizabeth. She/he's a duck-ish thingy lol.
Episode 45 is Sadahru's 'backstory'. You're right in thinking he isn't a normal dog haha.
And I prefer the name Bishamon or Bishamonten myself tbh. Vaisravana suits her but sounds weird as a username lmao
ALSO KLK TODAY GET HYPED