1910 animal births

male Pinta Island tortoise and the last known individual of the subspecies

Australian cattle dog; previously oldest verified dog

thumb|250px|upright|Józef Piłsudski with Kasztanka Kasztanka (; Polish for "chestnut mare"; born 1909 or 1910, died November 23, 1927) was the famous mare that belonged to interwar Poland's leader, Marshal Józef Piłsudski.