AbstractThis chapter describes a database for the input and sharing of data associated with Toxocara infections in the definitive canine host, the human and murine paratenic hosts and contamination of the environment with eggs of Toxocara. A flow chart of the SparkleSystems global parasite resource based on the design of the Toxocara database is included. Apart from improving methodology in the diagnosis and treatment of ocular larva migrans, visceral larva migrans, covert and other non-specific forms of human toxocariasis, the 'Sparkle' data resource addresses questions raised about the role of foxes, cats and rodents in the transmission and spread of Toxocara in potentially endemic sites in both the urban and rural environment.