69 Wild, Weird Facts That Will Blow Your Mind By Thought Catalog 29. Ducks have a corkscrew-shaped penis. 30. On average, two newborns are given to the wrong parent every day. 31. Cows have 11 different blood types. 32. Barcode scanners scan the white not the black. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22