Beavers not only make dams out of wood, but paper. They chew the wood to a pulp, which mixed with saliva and mud, becomes a thick, cardboard like material, which the beaver uses to insulate its home. No deck of cards had an Ace in it prior to 1948. The card appeared as part of a very successful promotion for Ace Bandages.
Squids can have between seven and eighteen tentacles, seemingly determined at random.
There is no generational correspondence of legs between parents and offspring, and scientists can't explain what determines the number of tentacles. Three of the supposed similarities between the Lincoln and Kennedy assassinations simply aren't true. John Booth did shoot Lincoln in a theater, and Oswald shot Kennedy from a warehouse, but Booth never hid in a warehouse. Also, Booth never went by three names. Even if he had, the letters in both the assassins' names don't both add up to fifteen, another supposed coincidence that simply isn't true.