Dogs who benefit most from a raincoat
Not all dogs have the same tolerance to rain, wind, and cooler temperatures. While some have thick coats that can naturally protect them from bad weather, others are much more sensitive to dampness and cold. In these cases, using a dog raincoat can help improve their comfort during walks.

Short-haired dogs
Short-haired dogs generally have more limited natural protection against climatic conditions. Unlike breeds with thick double coats, their fur retains less heat and allows moisture to penetrate more easily.
When exposed to rain during a walk, these dogs can quickly get wet down to the skin. This dampness can cause a feeling of cold and make the outing less pleasant. A raincoat then helps protect the dog's back and torso by limiting water infiltration into the coat.
Small breeds
Small dogs are often more sensitive to temperature variations. Their small size means they have less body mass to retain heat. Moreover, their proximity to the ground exposes them more to dampness, puddles, and wind.

When it rains, walks can quickly become uncomfortable for these dogs. A well-fitting raincoat can help protect a large part of their body and make outings more pleasant, even in light rain.
Puppies
Puppies are still developing, and their ability to regulate their body temperature is not always as efficient as that of an adult dog. Their coat may also be less dense, making them more vulnerable to weather conditions.

As they discover the outside world and begin their regular walks, protecting them from the rain can help offer them a more comfortable experience. A light raincoat can thus help them stay drier during outings.
Senior dogs
With age, some dogs become more sensitive to cold and dampness. Joints can be more sensitive, and humid climatic conditions can accentuate discomfort during walks.
A dog raincoat can then play a useful role in protecting the animal's body from rain and wind. This often allows for maintaining regular walks while reducing direct exposure to bad weather.

Increased comfort for certain situations
Even if not all dogs necessarily need a raincoat, this accessory can be particularly useful for dogs more sensitive to climatic conditions. By keeping the coat drier and limiting exposure to moisture, it helps make walks more pleasant, both for the dog and its owner.