The listing, Link the animals (Steam Key) has ended.
https://store.steampowered.com/app/1082650/Link_the_Animals/
ABOUT THIS GAME
Link the Animals is a relaxing, challenging puzzle game where you need to connect each animal with its respective pair. The level ends when all pairs are connected.
5 difficulty levels
More than 340 challenging puzzles
20+ animals and other creatures
The game is available for Windows, Mac, Linux, Android and iOS.