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+1. But drugs are risky. Put an iron band on the head of a baby to prevent cranial growth and you get people who grow with induced microcephaly, as they do in Pakistan (google for "rat children").
@shim I've seen my dog point one year to me and to my wife during conversations. Also barn owls are known for being able to track sounds from distinct directions simultaneously, but in their case their ears are in fixed positions (one upwards and one downwards).
