Spraint!

This is one of my favorite almost-never-get-the-chance-to-use-words in English! It refers to otter poo.

Evidently there is an entire science built around the study of spraints as a sort of sideways approach to studying otters - as poo tends not to be motile, while otters are absurdly motile. Just compare the quality of the above photo to the one of the source of the spraint, below, which would make any photographer of Nessie proud for its clarity and definition...

These (or similar) River Otters (Lontra canadensis) leave spraints that we see on every visit to my family in the Sierra Nevada foothills east of Sacramento - but this is only the third time I've seen otters in person on this property.

When asked to talk about spraints, my son said "No!, I'll tell you about cats, ONLY cats. I want to talk about cats right now."