Senen Reyes (born November 20, 1965), also known by his stage name Sen Dog, is a Cuban-American rapper who is best known as a member of the hip hop group Cypress Hill and as the lead vocalist for the nu metal band Powerflo.

[1] He has nurtured a solo career in addition to his work with Cypress Hill and Powerflo, and is the lead vocalist for rap rock band SX-10.

[4][5] In 1996, he performed "Quien Es Ese Negro (Who's That Black Dude)" with Mellow Man Ace, MC Skeey, Mr. Rico, and DJ Rif for the AIDS benefit album, Silencio=Muerte: Red Hot + Latin, produced by the Red Hot Organization.

In an interview with HipHopDX, Sen Dog described how he felt that he had more control and could talk about personal aspects of his life with this album.

In an interview with Entertainment Weekly Sen Dog said, "Pot got a bad name with the flower children of the '60s, and then all these hard drugs came in, and people started dropping like flies.