I didn’t know Charles Dickens and Alexandre Dumas both died in 1870, nor did I fully appreciate that some of their best known novels were published as serials.
There may be a few otters depicted in churches but they are usually relatively modern; like this window in Newcastle Cathedral. It references a legend that St Cuthbert prayed standing up to his neck in the North Sea at night and in the morning was warmed up on the shore by otters.