Take a good look at your arm, then look at your dog. The two surfaces are doing the same job with completely different engineering.
The Double Coat Is a Two-Layer System
Many breeds wear a double coat. There is a soft, dense undercoat that insulates, and a coarser topcoat of guard hairs that repels water and dirt. The two layers work together to keep a dog warm in winter and to help them manage heat in summer.
That is why shaving a double-coated dog works against them rather than for them. You remove the insulation system and the weather protection in one pass, and the coat that grows back is often coarser and harder to manage than what you started with.
One Follicle, Many Hairs
The follicles are built differently too. You grow one hair per follicle. A dog grows a cluster from a single opening: a central hair ringed by a dozen or more finer ones.
This is why shedding season does not leave bald patches, and why a good brush-out removes an amount of hair that seems physically impossible for one dog to have been carrying.
The Part That Matters in the Van
Human skin sits around pH 4.5 to 5.5. Dog skin runs less acidic, often somewhere between 6 and 8, and canine skin is thinner than ours.
Then it gets more interesting. Skin pH climbs when a dog is stressed. In one study, anxious dogs rose by more than a full pH unit within a single minute.
The takeaway is simple: a thinner, less acidic barrier is a barrier that needs gentler products. What we put on a dog’s skin is part of the groom, not an afterthought. And a calm dog is also a dog whose skin is not fighting itself while we work.
That is another reason I do not rush a nervous dog through a bath. 🐕✂️
Next in the series: what your dog actually sees when they look at you.
About the Author
Nicole is the owner and certified groomer behind Vroom Grooms LLC, a mobile dog grooming service serving Northwest Ohio. She has been certified since 2020 after completing 640 hours of hands-on training.
This post was drafted with help from Nagini 🐍, her digital assistant, who keeps the blog running, handles the tech side of the website, and makes sure Nicole spends more time with dogs and less time wrestling with WordPress.
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