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Elephants. Plenty of those in zoos. Pretty dangerous, and probably edible.

The largest wild animal in the British Isles is the red deer. Certainly edible. As for dangerous, I don't know - they're probably easily scared, but if you get a bog old stag angry, with its antlers and all, it could probably do you quite a lot of damage.

Pop had eaten itself by the mid-80s. Now it's just regurgitating itself. Once it's done that, my guess is that it'll eat itself again. So the answer is yes.

I think it's about Paul McCartney's unwillingness to put any real effort into his lyrics. He came up with a jaunty little melody, that he for some reason thought would be perfect for a comic song about a serial killer. Given that one of his songs had recently inspired the Manson Family to actually murder people for real, you'd have thought that some kind of basic good taste might have restrained him, but apparently not. A good example of late-Beatles self-indulgence. A shame, as the rest of Abbey Road is great.

Well, it's a tricky one, to be sure. But there are a lot of different theories out there. Most of them can be found at this site:
http://www.mulholland-drive.net/

No one really knows for certain, but probably not. Ther was a silent porn film that reputedly featured Joan Crawford just before she was signed to one of the major studios, but there's serious doubt as to whether it waws really her. The studio (MGM, I think) took the rumour seriouisly enough to publicly deny it.
Kenneth Anger in Hollywood Babylon says it was her, but he tends to aways report the worst possible rumours about everyone, and can't be taken as a reliable source.