O Leãozinho is a song by Caetano Veloso, a classic of Brazilian Música Popular Brasileira. It was written as a tribute to Dadi Carvalho, the bassist of Novos Baianos. The track was recorded in 1977 for the album Bicho, released on the Polygram label. The song features a lullaby like rhythm with a playful and gentle tone, celebrating the beauty and spirit of nature. The lyrics tell of a meeting with a young lion in the sun, whose light brings peace to the narrator's heart and makes him glad to spend time with the lion and share its light. It was also part of the soundtrack for the telenovela Sem Lenço, Sem Documento. Notable covers include Caetano Veloso's original on Bicho and versions by Teresa Salgueiro, Meja, Priscilla Ahn, Beirut, and others.