Causes. Headaches can be triggered by a variety of factors. The most common cause of headaches is prolonged tension or stress. These are called tension headaches or muscle-contraction headaches. Virtually everyone suffers from this at some time. Muscles in your scalp, neck, and face tighten and contract, causing spasms and pain.
Cat milk alternatives: If you want to give your cat milk, the safest bet is to purchase special lactose-free cat milk from your supermarket or pet store. Bear in mind that milk contains calories (water has none) so do keep it minimal. Obesity has serious health implications for cats.
Baby rabbits just do not lend themselves to care by inexperienced people. If they are injured, take them to a professional rehabilitator or vet office and let them take them. EDIT: Regarding what the person above said: Yes, they need special milk- cow's milk isn't rabbit milk. The closest you can get to rabbit's milk is cat's milk. Cow's milk will certainly hurt them. Although you cannot just feed them pellets and carrots. If they are old enough to eat those, they are old enough to be on their own and eating grass in the WILD. If they are not old enough to be on their own, they cannot eat those things, let alone survive on them.