The almond is a man-made hybrid of the wild almond, which is notoriously bitter and could be deadly when consumed in considerable amounts. The history of the almond is unclear, and scientists cannot determine which variant of the wild almond was selectively bred to create the modern almond.
Scientists suspect that the wild ancestor of the almond is the Amygdalus fenzliana (Fritsch) Lipsky because its trees, seeds, and fruits resemble the modern almond. It is also found in Armenia and Azerbaijan, where the modern almond is believed to have been selectively bred by humans. Besides the origin, scientists cannot determine how our ancestors managed to create a perfect and sweet almond because the almond is poisonous.