The word SILENT contains exactly the same letters as the word LISTEN.
Some Persian rugs may last as long as 500 years before wearing out.
The oyster is usually ambisexual. It begins life as a male, then becomes a female, then changes back to being a male, then back to being female. It may go back and forth many times.
Parrots, most famous of all talking birds, rarely acquire a vocabulary of more than twenty words. However, Tymhoney Greys and African Greys have been known to carry vocabularies in excess of 100 words.
A species of starfish known as the Linckia columbiae can reproduce its entire body — that is, grow back completely — from a single severed pieces less than a half-inch long.