Foss (c. 1873 – 26 November 1887), formally named Aderphos, was the pet cat of Edward Lear, the 19th-century author, artist, illustrator and poet. A "stumpy-tailed," "portly," and "unattractive" tabby cat, he was a favourite of Lear's and played an important role as a companion in the poet's lonely later years. Foss is mentioned frequently in Lear's correspondence and appears in his illustrations and at least one poem. Foss is said to have been the inspiration for the pussycat in Lear's illustrations for his poem "The Owl and the Pussycat". The funeral that Lear provided for Foss, which included an epigraphed headstone, is said to have been more elaborate than Lear's own.