Turton
Urinary lipocalins
Beynon, RJ, Hurst, JL, Turton, MJ , Robertson, DHL , Armstrong, SD, Cheetham, SA, Simpson, D, MacNicoll, A, Humphries, RE (2008) Urinary lipocalins in rodenta: is there a generic model? Chemical Signals in Vertebrates 11, 37-49 [PDF] [Abstract...]
Even the smallest of hamsters have lipocalins in their urine.
Turton MJ, Robertson DH, Smith JR, Hurst JL, Beynon RJ. Roborovskin, a Lipocalin in the Urine of the Roborovski Hamster, Phodopus roborovskii. Chem Senses. 2010 Jun 24. [PUBMED][PDF] [Abstract...]