Instructions:
Go into a map like highlands or dragon castle that your pet can easily handle while you go afk.
Go out where there are enemies and take your pet out.
Then put up a shop selling anything for whatever price. (Make sure its something rediculus like oat for 100m so no one buys it) While your pet is out and your shop is up. Go afk for like 2 hours or something.
Your pets loyalty and hunger will go down to 0, but because you have your shop up once it hits 0 on both the pet wont run away and after about 5 mins for some reason the pets loyalty spikes up to 94 and will never go down from there it gets stuck. (w00t) even if you dont feed it, it will gain exp like a regular pet with 94 loyalty. (100% exp gain as long as your pets loyalty is 90 or higher)

Note:
Just leave pets out while sleeping and never have to worry about them running away. And as everyone knows leveled up pets sell for really good mon. This is also a really good way to make money for hero online beginners. I just get a lot of pets and glitch them all out to 94 loyalty and then i sell them to other players as "bugged" pets and they sell for a lot. I just sold 2 bears for 500k each. This has got to be the easiest way to make money in HO without botting. I got 4 hero clients running at one time leveling up pets with this bug. in a week that will be like 1.2b.

how do you run so many clients? i want to do that so bad lol

to have 2 or more clients you have to bring up the windows task manager
go to processes and click on launcher.exe and then click end process
and there you have it once doing that you open up the hero again and you have 2 games running