Mucus is a viscous material produced by the mucous layer of your windpipe. Its job is to lubricate your nose and throat. But, infection or some other kind of disorder causes mucus to thicken up and start accumulating in your throat.
If you do wish to give your cats milk, then you can buy lactose-free cat milk (lactose is the sugar found in milk) from your pet food store, vets or supermarket, but itâs not essential. Indeed, some cats will not drink milk at all. Read our advice about giving your cat soya milk.
Not all cats are lactose-intolerant, but if you don't know for sure then don't try to see. If your cat accidentally eats a piece of cheese or something, then you'll know for sure. But until then, you can buy Cat-sip milk or similar milk for cats at a pet store or human Lactaid (lactose-reduced or lactose-free milk).