A portable pet urine reservoir is provided and can include a housing that defines a reservoir with a sloped basin with a plurality of protrusions upwardly emanating from the basin. The protrusions can be of different heights to allow a permeable pad disposed on top of the protrusions to lay approximately flat. An aperture disposed in the housing can also be provided through which collected urine in the reservoir can be emptied. Optionally, the aperture can comprise a valve. The portable pet urine reservoir can further include an additional reservoir, an additional basin, and an additional aperture. The portable pet urine reservoir can further include support structure, which upwardly extends from the additional basin In addition, a splash guard may be provided that fits into a gutter on the housing. Also, an optional cover can be provided.
