Do you put a coat on your long-haired dogs?

I have a poodle mix and her hair is currently about 1.5-2 inches long. It’s about 2°c—5°C right now. Do you guys with long-haired dogs put your dog in a coat in winter? If you do, at what temperature do you start putting it on? What are some signs the dog may need a coat or is too hot from wearing one?

Thank you to any who answer any of these questions! 😊