Considering the number of legs of each animal, it is found that there are 56 legs on the ground.
Hence the number of legs on the ground is given by:
N = 2 x 4 + 4 x 9 + 1 x 4 + 1 x 2 + 3 x 2 = 56.
A similar problem, also involving the number of legs of each animal, is given at https://brainly.com/question/14010151
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