Among the White House menagerie on the south lawn were donkeys, horses, and a pair of goats, Nanny and Nanko. Tad would hitch the goats to a chair, which he used as a cart, and would drive pell-mell through the White House during a reception, to the consternation of many guests. One day the pun-loving president observed a goat gamboling on the lawn and remarked: “He feeds on my bounty, and jumps with joy. Do you think we could call him a bounty-jumper?” In the spring of 1864, when Tad and the First Lady were away on one of their many trips, Lincoln sent her a telegram: “Tell Tad the goats and father are very well especially the goats.”
Source: Abraham Lincoln ∶ A Life ▫𓂃