Finn's skin is different on his front leg compared to his back leg? On Thursday we had to go to the Pet ER (a long story). Anyway, he had to stay overnight for fluids. When we went to see him on Friday, his front leg was shaved and some of his back leg. I guess they couldn't get a good vein on his back leg so shaved the front one. His skin on his back leg is darker than his skin on his front leg. Is that something to worry about? They didn't mention anything to me about it so I assumed they weren't concerned about it. Any ideas?