Nothing wrong with a bit of extra help in the way of heating your kennels though mate, especially if the weather is extreme, and they come in from a day or nights graft wet through, i have a tubular heater, but never had to use it yet this year, i will know when to put it in use, give em a good rub down when i come in, if the weather gets really bad, then a good rub down, and on it will go, long haired dogs will hold the wet, i have whippets, easier to dry off