I ❤ Tadpoles

Scientists have been attempting to find an answer to the question of whether eyes can be planted on the body, and then utilized. They have finally been able to solve it. 134 tadpoles of the African Clawed Frog species have been experimented on. The scientists grafted eyes onto the tails of the tadpoles, and then removed the eyes. After doing so the tadpoles were put into a pool with blue light areas that were safe, and red areas that would zap the tadpoles with a small amount of electricity. The areas would change so the tadpoles couldn't memorize the locations. They then used the eyes on their tales to avoid the red areas, proving that they were using them. Life-changing.

http://www.livescience.com/27518-tadpoles-sprout-eyeballs-on-tails.html