In the egg, American bullfrogs learn how to avoid becoming lunch -- ScienceDaily

When exposed to potential predators as an embryo, the invasive American bullfrog becomes harder to kill when it becomes a tadpole, according to a new study by Oregon State University researchers.

Tadpoles that hide more and develop faster when predators are present have better chances at...

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https://skpsoft.com/animal/in-the-egg-american-bullfrogs-learn-how-to-avoid-becoming-lunch-sciencedaily/