"Coat color is caused by a complex interplay of genetics; it can also be affected by factors like aging," an expert told Newsweek.

Frequently asked questions What color is pee with pancreatic cancer? Jaundice due to pancreatic cancer can cause urine to be darker than usual, possibly becoming a dark brown color.

From Tiffany Blue to iridescent shimmers, celebrity nail artists Gina Edwards and Tom Bachik break down the 13 biggest nail color trends that will be huge in 2025.

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