Board Game Arena

I was playing Clans of Caledonia in solo mode to learn the game. Could not find the game mechanism for slaughtering animals for meat production. Could anyone help me with that?

When fulfilling a contract requiring meat (and at no other time), you remove the associated animal from the board (Sheep for Mutton, Beef for Cows), and put it back into your supply.

I can't seem to remove animals from the board? Tried everything. Am I missing something?

When you have enough goods and sheep/cattle on the board, you can just click on your contract, and you'll be prompted to pick animals for slaughter. Yeah it's not super intuitive!