You know what I've always wondered?

[pocaracas]

Hmmm.... Polyjuice potion.... I remember it going a bit wrong... with some cat hair in the mix, IIRC...
But an animagus, like Prof McGonagall, can do it with a wave of the wand.

But there are several more examples of polyjuice potion being used in the books where nothing goes wrong - Harry and Ron into Crabbe and Goyle; Barty Crouch into Mad-Eye Moody for a whole year; Crabbe and Goyle as random students in Half-Blood Prince; the seven transformations of the Order members into Harry; Ron, Hermione and Harry into Ministry employees to find Umbridge and the locket... you're focusing on the one time in the books where it went wrong and forgetting that that's far outweighed by all the times it went right.

And the point of the animagus transformation is to turn into a non-human animal anyway.

Why are humans so special?
They're just animals... the same as the others... and if you're magically retaining all the cognitive function of your original self, there's no need to alter your brain mechanisms. So it's just the same!
Also the polyjuice potion went wrong one time in the books.... how many times did an animagus screw up their transformation?

If you're going through the trouble of changing into an animal, I'd guess you could take care of creating a suitable environment for it, first...
Or just.... transform into something that could live within your present environment?

But I don't know, necessarily, that you can control what kind of animal you would turn into.  The best guess at this point is that it might be based on some aspect of your personality.  There may be limitations on the spell that we just don't know about because they never come up in the books.

I don't know that either, but one must assume anything goes. We're talking magic, after all! Not just some physics pre-determined machine.

Breasts, I guess, are also, usually, not seen as weighing anything significant, right? But I can also foresee a mindless person bumping them into something unexpected...

...

I would expect this kind of assumption from a guy.  Bumping into things, really? LOL

yeah... I was thinking of sitting at a table and leaning on it for some reason, only to find some dangling bits rubbing against it, before a guy would expect to even be close to the table.

As for the weight issue, I've actually been wondering about this for personal reasons...

I think I once heard that the average breast weighs around half a kilo.... so... one pound?
Both combined, 2 pounds. hmmm I wonder if that's where they came up with the unit of weight for the pound?

I know some women have large enough breasts that it causes separation of the ribs in their backs and other general back problems, so weight can be a significant thing.  This is at least one reason why breast reduction surgery is an option some women choose.  Having boobs can be a real drag.

Aye... I've heard the same... from someone who claimed to have some 2kg on each. And she also considered having a reduction.... and yes, whatevs, the nipple repositioning is a thing. Which means no ability to breastfeed, ever, because all the connections are severed.... as well as all the nerves.
It must suck to loose all sensation on there.