I have a GY chelon and don't have the challenger.

Ok, phew! That's a relief.

Tried going to the Brewery with a non-alcoholic drink in my inventory... didn't work either.

He wasn’t impressed when I had a fancy Libertine Lounge drink or after feeding one to my pet.

I don't think it is. I have one and nothing happened. Or...wait a min...this is a stretch but...

Turns out nope, active GY pet doesn't work either

Feeding, deleting, donating a vegan item did not work.

Hey i just thought of something ..............

Had a rat item in my inventory, didn't do anything. Green apple item ... nothing... Went in with no eyes on my HA... nothing.... I'm kinda running out of ideas here. I even went to the link posted in case that was the one that would work... nope.

Tried that.... didn't work either. I even tried and covered it up... nothing.

Sorry, I wish I was better at this ....................

Nah it's ok. Don't worry about it. c: We're all tossing ideas into the ring at this point. Something will work.... c: Always does. Thanks for sharing your theories though, every bit helps.

Sorry guys I had to get off to go to dinner and then go grocery shopping. I can give a hint! Gunter doesn't like when you abuse animals e.e

So maybe a pet with 10/10 happiness?

My pet had 10/10 happiness and hunger

Did you visit Gunter at the brewery?

Marlboro me too now that you mention it ... she is at the Rathskeller Inn

Went to him with a pet that was hungry and unhappy... Nothing, went to him with a pet that was 0/10 hungry and 10/10 happy... nothing.... I wanna puuunch him so hard in his faaaace. :(

- I went to the brewery. It's just giving me the closed message.

Tried and failed:

I think I can give one more vague hint?

Is your pets health is full?

All of my pets have full health and full hunger - they go to the inn.