In the 1950s, the United States gave the Soviet Union a younger, female alligator as a gift.[1][2] She was named Shipka, and she and Saturn began mating, although they did not produce any offspring, as all the eggs Shipka produced have been infertile.[2][10] Shipka, who was thirty years younger than Saturn, later died, and Saturn was so distressed by her death that he refused food for a time.[3] By 2005, Saturn had a new mate, who was then thirty years old.[4]