Our expert says:
This type of foot licking is quite common in Jack Russells as they seem to be very fussy about their feet. However if it is excessive as you describe it can cause infections and septic sores, which may even have to be amputated. This is often, as you suggest, stress-related so I suggest that you work out what is stressing her out and sort that out. Make sure she is getting daily walks, socialising with other dogs and preferably playing with them, enough tasty food, toys (as you mentioned), a view out of her property and is allowed indoors as much as possible. She could also be getting too much attention, (which is why she would resent the other dog getting attention), so you may need a behaviourist to help change the type of attention you give her. Spend time each day brushing or massaging her all over her body. You can try rubbing her feet with something bitter like a solution of aloe powder (obtainable at the chemist) or diluted tea tree and lavender oil. Give her lots of chewy toys to distract her from the chewing - perhaps put some peanut butter inside a hoof. There are drugs on the market for obsessive behaviour, but these should be used as a last resort. Please re-post this if you would like the vet to reply as well, especially regarding the drug treatment.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.