Bugs (Linux version):
(1) When you drop down to the second level (assuming the first level is where you start), if you land on green grass, the animal will jump and glitch partially up to the first level again gaining an extra point. This allows you to grind points by doing nothing.
(2) Can't rotate the tree 360* with the mouse, you can only rotate the tree partially. This presents a problem when the randomly generated path only allows you to jump on a grey path (which resets you) or there isn't a path at all to go to (so the game is over).