Thank you for your reply.
Whenever this starts in an older dog I encourage an examination with your veterinarian to be certain there is not a medical or systemic cause for the anxiety.
Especially when there is an increased appetite BUT weight loss.
Even something as simple as early cataracts and decreased night time vision can explain this nervous behavior.
With that said, some dogs do just have anxiety that is not medical, rather behavioral.
For this, homeopathic options for treatment can be considered, including melatonin and DAP.
Melatonin is a common medication used in people and pets, commonly dosed at 1.5 mg per dose for dogs under 30 pounds.
This can be given at night, or up to 2-3 times per day.
DAP is the other option discussed above (dog appeasing pheromone).
This is another common option.
It is a hormone / pheremone.
Here's a link on this product - http://www.dogappeasingpheromone.com/
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