So any news yet what it is,My maggy last year got into a burr bush her tail was covered in them and i thought i had gotten them all out,well there was one that must of been pricking her she ripped a little patch of hair out on the back of here tail,Took her to the vets i was so scared she had infection by the colour of her skin,Vet gave her some dye stuff to put on and within 3 months all the hair had grown back...I hate when my animals get hurt it scares us so much!!!