Quick Scoop

You can sell animals in Roblox Islands by upgrading your Animal Husbandry progress and then using the animal sell option from the animal menu; the game’s update notes say animals can be sold for coins and XP, with the payout affected by traits, personality, happiness, and age. [8] [8] [8]
What to doHow it works
Raise Animal HusbandryAnimal selling is tied to the animal systems added in the update, so you need access to the animal features first.
Open the animal interfaceThe update added a redesigned animal inspection menu, which is where animal management happens.
Choose sellAnimals can be sold for coins and XP, and the value changes based on the animal’s stats.

What matters most

The important part is that selling is not just a simple one-click cash-out; the game scales the reward based on the animal’s condition and traits. That means a happier, older, or better-trait animal may give a different payout than a basic one.

Simple steps

  1. Go to your island and open the animal management menu.
  1. Inspect the animal you want to remove.
  1. Select the sell option if it is available.
  1. Confirm the sale to receive coins and XP.

Extra note

If you were actually asking about a different Roblox game with “islands” in the title, the exact selling method can vary a lot between games. For Roblox Islands itself, the update notes confirm animal selling exists and is tied to the Animal Husbandry system.