Konnie Hein

Hoping somebody can give me some hints on this:
After his torn Achilles tendon injury, my young Mal-GSD mix started to develop a pinkish hue to his nose. Its almost as if the black faded. His nose had always been black year-round before the injury.

To give some possibly helpful background, in the time since the injury (which happened in April) he has been living out of his crate in our kitchen. Initially his exposure to the outdoors was only for brief potty-walks. Over the past 3 months or so, he's been cleared to do more work and has spent more time outside with me (either doing agility, obedience or walking/running). He probably only spends an hour a day maximum outside though. Although his muscle tone suffered tremendously in the first 2 months after the injury, I've managed to slowly build him back up. Now he's very solid and muscular.

Also, shortly after his injury, I started him on a supplement called Nutro. He gets this mixed in his food (Cal. Natural L&R). He gets no other supplements.

Can anybody think of a reason why his nose might be turning pink? I'm wondering if its lack of exposure to the sun or some vitamin deficiency or something. Years ago I had a female GSD with EPI whose nose turned pinkish in the winter. Her nose was solid black all summer, spring and fall. This happened every year since she was a pup.

Thoughts?

__________________
www.youtube.com/focusedscenting