Each animal has 1+3=<<1+3=4>>4 total heads and legs.

Then there are 20/4=<<20/4=5>>5 in the flock.

# Answer

5
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The tripodasaurus has three legs. In a flock of tripodasauruses, there is a total of 20 heads and legs. How many tripodasauruses are in the flock?
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5
The tripodasaurus has three legs. In a flock of tripodasauruses, there is a total of 20 heads and legs. How many tripodasauruses are in the flock?
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