Bandai, a Japanese toy company, made millions of dollars by transferring the precepts of pet-keeping to the electronic world with tamagotchi.

ECONOMIST: Mouse of Commons

Though a great enthusiast for all things crocodile-related - he once seriously considered the logistics of keeping one in his home as a pet - Packham says humans always need to be on their guard when in the vicinity of such animals.

BBC: Who, what, why: How do you fight off a crocodile?