Urine Problem

[Dawnna]

[size="3"] Hi Everyone!

SHORT VERSION:
I've had somewhat of an on again, off again, urinary problem with one
(out of 3) of My Dogs, Juneau. His urine is very grimy & concentrated...
Otherwise, Elimination is normal & uneventful.

Has anyone seen this before? Or have any ideas of what this could be?

I'm posting a picture of each of my Dogs for comparison.
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PROFESSIONAL OPINION: ** Edit - Do not use profane language within your posts. Thank you. **
"He needs to be neutered",
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BACKGROUND INFO:
Clear urine from Birth to 3 yrs. old
Grimy from 3 to 4 years old --> (vet/neuter was no help)
Clear from 4 to 6 years old ---> (I added water to the food and all was well)
Grimy from 6 years old to now --> (7 weeks or so)
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RESEARCH:
Bladder problems, Kidney problems, Diabetes...
No Blood
No Straining
No increased or sudden urge to urinate
No Lethargy
No Weight Gain
No Coat Problems
Skin Clear & Healthy
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PRIMARY DIET: (Served over 3 meals per day)
Azmira Lamb Dry Food + Water - (Reverse Osmosis Only)
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ADDITIONALLY :
A mix of Probiotic, Herbs, Enzymes...
8 Billion Probiotic (Acidophilus, etc.), Bee Pollen, Oregano,
Peppermint, Digestive Enzymes From Beets, Molasses, Pineapple, & Papaya,
Vitamin C Ascorbate, Rose Hips Powder
A splash of Olive Oil & Wheat germ
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OCCASIONALLY: 1-3x times/week:
Carrots
Peas
Cooked Turkey (not processed)
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Any Questions? Suggestions?

Thank you!
Dawnna