You take LSD.

LMAO!!!!

And you really think that stuff works? Come on now

simple, you cant

lol yep what everyone else said... LOL

No idea. You sure there's such a thing to begin with?
You can't "expirience skills of an animal" that's for sure.

Ask an Indian Shaman or take LSD

Why exactly would you want to?
(Oh, you can't.)

You have to cut yourself open and let the blood drip on the animal of your choice.

dont think you can shapeshift in the spirit but I could be wrong

I'm assuming by most answers that people are thinking the astral body is the same as the physical....
The Astral Body is the spirit experienced while you are still alive.
You can change your astral form if you want to. Simply will it to happen. As for skills and such being transferred, I don't think it would work that way, at least, not so easily. Spirit and Body, you know...kind of hard.
Remember that the spirit has no physical shape. Any shape you imagine it to be is just a representation in the mind.

Use your mind when meditating.

You can fly around all you want, but you cant go into another body, because that creatures body is already occupied and they will not let you in. If you try to put on a dead and corrupted body it will not sustain you either. Those are the rules. Shapeshifting is not a spirit taking over the body of an animal, it is just the ability of changing your own body into that of an animal. In other words, "mind over matter" to the Extreme. So if you want to experience walking in the skin of an animal you're going to have to learn to shape shift. Astral Projection is a piece of cake comparatively. Best of luck.

No. It's impossible to shape shift in the Physical plane (the one we're on now) we can only do this in the Astral Plane. Thats why people say "Everythings possible in the astral realm." so we do that in the astral plane. And the first time I astral projected was three months ago, and it was awesome. It was one of the most amazing things I experienced. But yeah, you can't do that.