Westminster Kennel Club Dog Show (8 p.m., USA): Last year a little beagle named Uno went from

Westminster Kennel Club Dog Show (8 p.m., USA): Last year a little beagle named Uno went from underdog to wonder dog at the prestigious Westminster Kennel Club competition. But who will rule the pampered-pooch pageant this year? We expect some off-the-leash excitement.

“The American Experience” (9 p.m., PBS): As Americans celebrate a long weekend, it’s also a fitting time to remember a great American it honors. With that in mind, PBS will be airing a pair of documentaries about our 16th president.

“American Experience” is premiering “The Assassination of Abraham Lincoln” on Monday, three days short of Lincoln’s 200th birthday.

It was on April 14, 1865, that he was shot at Ford’s Theatre in Washington. Over the next dozen days, the largest manhunt ever mobilized up to that time closed in on his assassin, the 26-year-old actor John Wilkes Booth, whose murderous act helped solidify the nation’s admiration for the man he killed.

Interviews with Lincoln scholars help chart this tragedy as Will Patton (“Numb3rs,” “A Mighty Heart”) provides Booth’s voice and Chris Cooper (“Seabiscuit,” “Adaptation”) narrates.