Urine
Cauxin in big cat urine
McLean, L., Hurst, J.L., Gaskell, C.J., Lewis, J. C. M & Beynon, R.J. (2007) Characterization of Cauxin in the Urine of Domestic and Big Cats (2007) J. Chem. Ecol 3, 1997-2009 [PUBMED][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...]