Winter snowfall makes changes in urine color easier to spot. Dr Ben Character, DVM, walks through what changes in urine color mean and what to do about it in this issue.
Source: The Retriever Journal, December/January 2015, page 32. (direct link unavailable)
The more common cause of red colored urine is the presence of blood – and in this case whole blood vs. just the component hemoglobin. The most common cause of whole blood in the urine is an irritation to the lining of the bladder secondary to a urinary tract infection (UTI). The other causes include bleeding in the kidneys, ureters, bladder and urethra to name a few.