Myth- “You can tell a dogs health by how warm and dry, or wet and cold its nose is”. A dog’s nose is wet because it is covered in a mucus which makes it feel cold but sometimes it can be dry, for example when it wakes up after a nap, because the nose is dry it feels warmer, but this does not mean it has a temperature or fever. The best way to find out is to stick a thermometer up its butt! Or bring it to your Vet.