OK, I'm showing my ignorance again here LOL

Could you guys please either give me a run down on animal fibres or point me in the direction of useful information?

I know they are great for warmth, and do like the addition of a Wool component to my two winter coats, but I'm wondering about the other types of fibres.

I've worked out Cashmere is the holy grail (or so it seems) based on the price!

But the two fibres I'm most curious about are Angora and Mohair. I have a dress which is an Angora blend and a cardi that is a Mohair blend... and oh my goodness - I can't wear either one of these if any of their fabric is touching my skin as I get welts and insanely itchy. The Angora also tends to shed itty bitty fibres everywhere that get in my eyes when dressing etc and are really quite annoying.

So, are these fibres always like this, or is it more likely to be the manufacturing process? For some reason I have the vague idea that these fibres can be spun different producing different results (the word micron is coming to mind and I don't know why!!).

Is there anything you can do to itchy fibres like these to reduce the itch or do they need to disappear from my wardrobe?

Also, where does Merino fit into this? Is it more like Cashmere or the itchier fibres?

Thanks for any info - my old High School Home Economics memories are failing me at the moment!!