Growth on puppy's paw pad?

[Angie Baker]

Our 4 month puppy appears to have a small growth between her paw pads on her back foot.  We noticed because she keeps biting at it & we thought she had something stuck in between her pads.  Has anyone seen or heard of this before?  She usesher foot just fine but is definitely sensitive to us touching it versus her other paws.  We have a vet appt next week thankfully but still worried.  Thanks for any suggestions!

[Angie Baker]

Thanks so much everyone! 

It was a burr that had gotten wedged in between her paw pads and entangled with fur.  And judging by the smell was beginning to get infected also.  Poor thing - no wonder she couldn't put pressure on that back paw.  Thankfully the vet was able to cut the burr out, and she's back to her playful self again.  I really appreciate all the helpful comments and well wishes.