Dogs are capable of understanding up to 250 words and gestures and have demonstrated the ability to do simple mathematical calculations.
Understanding English actually hurts professional players of English scrabble. Some of the world’s best Scrabble players are Thai and can’t speak English.
Many cinemas in Denmark show Danish subtitles on Danish films, because of difficulties understanding different dialects.
Until the Renaissance, understanding of human anatomy was based on the dissection of animals, with human autopsies considered an affront in virtually all cultures.