Lambdapapillomavirus
Lambdapapillomavirus is a genus of viruses, in the family Papillomaviridae. Cats and dogs serve as natural hosts. There are currently five species in this genus including the type species Lambdapapillomavirus 2. Diseases associated with this genus include: mucosal and cutaneous lesions.

Taxonomy
Group: dsDNA

Structure
Viruses in Lambdapapillomavirus are non-enveloped, with icosahedral geometries, and T=7 symmetry. The diameter is around 52-55 nm. Genomes are circular, around 8kb in length.

Life cycle
Viral replication is nuclear. Entry into the host cell is achieved by attachment of the viral proteins to host receptors, which mediates endocytosis. Replication follows the dsDNA bidirectional replication model. DNA-templated transcription, with some alternative splicing mechanism is the method of transcription. The virus exits the host cell by nuclear envelope breakdown.
Cats and dogs serve as the natural host. Transmission routes are contact.