I have 1ish year old Chihuahua named Biscuit and since about mid-August (approx) his paws have been really bothering him, he is constantly licking them and nibbling them so much I end up giving him Benedril to calm him down. I took him to the vet twice and he has been no help, changed his diet to weed out any form of white bread or grains which has helped a little and I just have no idea what to do, I feel HORRIBLE for him, any ideas?

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The Present:
2014 Audi Q5 TDI Prestige
The Past:
2013 Lexus GS350
2013 VW Golf TDI
2007 BMW X5 4.8i LOADED & Loved
2009 VW Jetta
2008 VW Touareg VR6
2005 BMW X5 3.0i
2005 BMW Z4 3.0i
2004 BMW X5 3.0i
2003 BMW 325i
2000 Ford Explorer Eddie Bauer 4x4