This is a bad design level. At the 5th animal, there are 3 blinking bubbles, the 3rd one is above the tree, so you can't shoot it. As such, you have to control those fire dragon in such a way that they fire at the tree so you can't avoid shooting the 3rd blinking bubble.
In other words, this level does not award player that can save 20+ bubbles before you get to the 5th animal. I have 20+ bubbles before I approach the 5th animal, but if the fire dragon is not available, having 20+ bubbles is useless, you have to end the game.
Finally, please watch how the last animal is saved, they are 3 shots in a million, this is the very first time I saved an animal by shooting the fire dragon 3 times in a row.
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