Yes, and that is the point. Suika Animals uses the merge formula of the Suika Watermelon craze, only with cute animals instead of fruit.
Drop animals into the box and combine two identical ones to get a bigger animal. Keep merging, and at the end of the chain there is a large tiger. Only matching animals can merge, so think about where each one lands.
Move the animal left or right with the mouse or your finger, then click or tap to drop it. If the pile rises above the line, the game is over. Keep the big animals in one corner and don’t drop small ones between large ones. Another merge game you may like is Fruit Blocks Match.