Say “rat”, say “cat”, and say “man”. Then read this study, if you want to:
“Phonological similarity and trace degradation in the serial recall task: when CAT helps RAT, but not MAN,” Anthony B. Fallon, Kim Groves, and, Gerald Tehan, International Journal of Psychology, vol. 34, nos. 5/6, 1999, pp. 301-307.
The photo, warped though it appears to be, is of co-author Tehan.
BONUS: But, but, but… if you feel you are stuck in a rat race, yet you yearn to know more about rat traces, try this study: “Amphetamine, 3, 4-methylenedioxymethamphetamine, lysergic acid diethylamide, and metabolites of the catecholamine neurotransmitters are agonists of a rat trace amine receptor,” James R. Bunzow, Mark S. Sonders, Seksiri Arttamangkul, Laura M. Harrison, G. E. Zhang, Denise I. Quigley, Tristan Darland et al., Molecular Pharmacology 60, no. 6 (2001): 1181-1188.