evidence: Plenty of presidents did — and other pets, too. [...] President Bill Clinton gets an enthusiastic greeting from his chocolate Labrador retriever, Buddy, on the South Lawn of the White House in June 1999. [...] In December 1947, President Harry S. Truman received an unsolicited gift: a cocker spaniel puppy named Feller, who poses here by the crate he came in. The pup was adopted by Truman’s personal physician.