Random cool related fact in exchange for that neat essay: the word "sleuth", like a detective, actually comes from the Scottish interjection for the sound a bloodhound makes when he poops.
The Scottish bloodhounds used by the police for tracking criminals on the lam were colloquially known as "sleuth-hounds", because accorring to the Scots when they poop it sounds like slooth. Scottish bloodhounds w so admired by the police that that's where the English and American word "sleuth" comes from, in reference to a detective.
So when Humphrey Bogart is breeding about being "the best sleuth in LA", he's also bragging about being the best dog shit in LA in archaic Scottish.
From Bannockburn to Flodden: Wallace, Bruce, and the Heroes of Medieval Scotland https://www.amazon.com/dp/1581821271/ref=cm_sw_r_apan_glt_i_YXGG8BYG2X7MH4B7ZRV7 Source: