DAVID
The Database for Annotation, Visualization and Integrated Discovery (DAVID) provides a comprehensive set of functional annotation tools for investigators to understand biological meaning behind large list of genes. For a step-by-step procedure on using DAVID for gene functional analysis see:

Systematic and integrative analysis of large gene lists using DAVID Bioinformatics Resources. (2009) Nature Protocols 4(1):44-57

Ensembl
Details for how Ensembl gene annotations are derived can be found here. The supplemental annotation data used by Better Bunny can be found at Ensembl BioMart.

Agilent
Annotations and other array related details can be viewed and downloaded from the Agilent eArray site.

Gene Ontology
For gene ontologies specific to rabbit (i.e., not derived from orthologues) see the Gene Ontology website.