Our dog has a really bad red rash in between each individual toe of his back legs . He will actually take his WHOLE foot /nails and all and put them in his mouth and just chew on them as hard as he can. They become very bright red and today they actually started bleeding cause we couldn’t stop him in time. We are on a very strict income cause of the virus affecting our jobs. Is there anyone here who could give us guidance on what it is and what we should do so he will stop basically trying to eat his rear paws??? We would greatly appreciate it. Thank you!