Reveille is the official mascot of Texas A&M University. Students adopted the first Reveille, a mixed-breed dog, in 1931. The cadets raised $100 during World War II to make Reveille a general, as part of a fundraiser for the K-9 Corps. Reveille is the highest-ranking member of the Texas A&M Corps of Cadets.

Eight years after the first Reveille died, a graduate of the university donated a Shetland Sheepdog to be the second official Aggie mascot, Reveille II. The third Reveille was the first to be a purebred Rough Collie; all subsequent mascots have belonged to this breed. Reveille IV, V, VI, VII, and VIII died in 1989, 1999, 2003, 2013, and 2018, respectively. Reveille IX served from May 9, 2015 until her retirement on April 30, 2021. She now resides at the Stevenson Companion Animal Life-Care Center on campus. The current mascot, Reveille X, assumed her role as mascot on April 30, 2021 during the Corps of Cadets Final Review. All Reveilles to date have been female.

When they die, the Reveilles are buried in a special cemetery located outside the north end of Kyle Field. The bodies are laid facing the south end zone and the scoreboard. After the addition to Kyle Field was built at the north end, blocking the view of the scoreboard, a small scoreboard was placed outside the stadium, named the Reveille Scoreboard, so the tradition could live on.