Lions, such as Elsa the Lioness, as well as other animals in the wild, have featured in entertaining movies without any training.

Mufasa was a lion in an entertaining movie, and as an animated character he didn't need to be trained.

Notwithstanding animation and special effects making it unnecessary, some lions and bears have been trained successfully for shows or filming.

Otters are very playful animals, and as such maybe they deserve some publicity as well.

Platypus' (platypi?) are under-represented in this list.

Quite interesting creatures, platypi

Really; just put a fedora on one and he'll look like a secret agent!

(Sorry; been watching Phineas and Ferb lately. )

Secret agents prefer top hats these days.

That wouldn't be conspicuous for a secret agent at all.

Usually my favorite espionage-themed song is "Secret Agent Man" from the 1960s.

Very difficult to do any spy work if you have your own theme song, though.

Well, if everybody had their own theme song, all you'd have to do was drum up an arrangement for special occasions like espionage and something catchy for public appearances.

Xenophobia has a lot to do with espionage due to mutual distrust of various nations' expansionist motives.

Yet it's easier to get along with people once you get to know them.

Zealous filmmakers might prefer for audiences to continue viewing their foreign villains in a stereotypical light, though!