The Dog Collar in BG3 is mostly an Easter egg, but it does have one use: when you wear it and press the hidden button in the Arcane Tower, it dispenses a raw steak/food item worth 10 camp supplies.

What it does

  • It does not give combat stats or special powers.
  • It is tied to Myrna, Lenore De Hurst’s dog, and functions like a memorial item.
  • The hidden interaction only works when a character is wearing the collar.

Where to use it

  • Bring the collar to the Arcane Tower in the Underdark.
  • Find the button near the dog bed/bowl area, then interact with it while wearing the collar.
  • You get food once, and that’s basically the collar’s practical payoff.

In plain terms

It’s a small secret loot item: useful once for free camp supplies, then mostly a bit of story flavor.