I am playing in Opera Browser in Mobile and I have found out a bug that when the image quality is set to high the 'Cowgirl' and 'Doggy' animations are bugged out on the left side i.e. only black boxes are there.
I don't about other animation but the game is working smoothly at high image quality. Also at medium image quality all the animations except the one in the image is also not visible i.e. the third one in the game.