A white coat is more than a colour in some dogs. The same pigment patterning that produces a white jacket can, in certain breeds and bloodlines, be linked to hearing loss present from birth, and the pale skin underneath that coat has far less natural protection against the sun than the skin of a dark-coated dog.
Why white coats and hearing are linked
Pigment cells do more than colour fur — they also play a part in the normal working of the inner ear. When those cells are absent in the ear, as happens in some heavily white-patterned dogs, that ear may not hear. The deafness is congenital, meaning a puppy is born with it, and it can affect one ear or both. A puppy deaf in one ear is the easiest to miss, because she turns toward sounds using her hearing ear and copes so well that owners simply assume she is a deep sleeper or a little stubborn about coming when called from one particular side.
Simple hearing observations to make at home
Test responses out of sight, so she cannot answer to movement or vibration instead of sound. Stand behind her while she is calmly awake and make a sharp noise — keys jingled or a hand clap — and watch for an ear flick or head turn, then repeat on the other side. Notice whether she wakes to household noises like the other dogs do, whether she locates a squeaked toy by sound, and whether she seems startled when approached from one side in particular. Write down what you see rather than grading it pass or fail; a formal hearing assessment is a vet-side test, and your dated observations are the evidence that prompts it.
Living well with a dog who hears less
If her hearing does turn out to be reduced, the adjustments are practical rather than dramatic: approach where she can see you, use a floor-stamping vibration or a visual cue before touching a sleeping dog, and build hand signals alongside spoken cues from puppyhood so communication never depends on sound alone. Keep a deaf or partially deaf dog on a lead or long line in unenclosed places, because recall by voice is unreliable for her. None of this limits her quality of life — white-coated dogs with hearing loss learn routines, read body language keenly, and bond closely; they simply need owners who have replaced sound with signals deliberately.
Pink skin, thin fur, and the sun
Look at where her coat is thinnest: ear tips and the backs of the ears, the bridge of the nose, around the eyes, and the groin and belly where fur is sparse and skin shows pink. Those areas can redden after surprisingly little exposure, and repeated burning leaves skin sore, crusty, and thickened over time. Provide shade she can actually choose in the garden, plan long walks for earlier or later in the day during strong summer sun, and be especially careful around water and pale ground, which bounce light back onto bellies and noses. Any product meant for her skin should be one your vet is happy for a dog to lick, since whatever goes on will partly be groomed off.
What to raise with the vet, and when
Mention one-sided responses to sound at her next routine visit and ask whether a formal hearing test is worthwhile, sooner if she seems not to hear on either side. Show the vet any patch of skin that repeatedly reddens, crusts, develops a sore that does not heal, or changes in texture or colour, because persistently sun-damaged skin deserves an in-person look rather than another summer of watching. Recording hearing observations, sun reactions, and the vet's findings in her KinsLe Pet Passport builds the long-term picture of both issues in the one packet that travels with her to every appointment.