Magnetism affects leather?

[DieselTech]

I am just curious as you why it sticks. But the sheath that sticks to magnetic strip. Is it by chance a chrome tan leather? 

Or is the brown leather dyed with a ferrous solution to achieve the rust red/ brown leather?

[SUP]

Ordinary veg tanned leather, dyed brown with Fiebing's  Pro dye. Same as several other knife sheaths that I made at that time. I used the same vey tanned leather side from which to cut out the different sheaths. Made them the same way and dyed several of them different shades of brown - light, medium or dark. But other items have been dyed with the same brown as this sheath and they are not magnetic.

[dikman]

So it's obviously something in the leather itself. It would be interesting to carry out a few tests on it but it's all become mere conjecture now as it's now in a place so safe that it it can't be found.

[TomE]

Regarding paranormal phenomena related to cows, my brother-in-law is a retired veterinarian who used to do a lot of work at dairies.  When they were implanting embryos in cows he would hold his vet tech's wedding ring on a thread over the petri dish containing the embryo.  They would predict the sex of the embryo based on the direction that the ring rotated.  Had to be his tech's ring to get an accurate reading.  Probably another case of cow magnetism.  He is a bit of a magician and story teller, which his clients enjoyed.