Adding goat's milk or bone broth to kibble is a low-cost, high-impact way to boost gut flora, kidney health, and hydration — especially critical for senior dogs whose water intake naturally declines. Reddit's senior dog community swears by it.
This is the most underrated dog supplement on the list. It costs almost nothing, dogs go crazy for it, and it solves the hydration problem that silently damages senior dog kidneys. Pour it over kibble and you're done.
“Are you feeding a kibble diet? If so; hydrating the kibble with water, bone broth, goats milk, or a rotation of these. Good for kidney and urinary health, and goats milk occasionally is good for gut flora.”
r/DogAdvice · read thread →
“Adequate water intake is imperative for aging dogs, as total water content declines with age. This also helps the kidneys maintain typical function, which can help avoid dehydration and conserve electrolytes.”
Healthline · read full review →
