Ottery

Anyone who has watched, for example, a litter of otter cubs rolling about in an ottery tangle can hardly doubt that they're really having fun.

[…] this guy she's seen before with the . . . ferret? or mongoose? ... an ottery thing, whatever, on a clothesline leash. . . .

Spraints consist mostly of food remains, such as fish bones, to which are added the fairly inconspicuous secretions of two anal glands, situated along the gut close to the anus; they produce the 'ottery' smell.