472 FARM ANIMALS 
the hind legs. After these preliminary symptoms have 
been shown for a time, the skin becomes red, changing 
to purple, especially noticeable in white-haired hogs. The 
hog is then usually within a very few days of death. On 
opening the dead carcass small blood clots may be found 
in the fat cut through under the skin. The glands 
along the intestines are intensely inflamed. The mucous 
membrane of the stomach is frequently thickened and 
roughened, and in chronic cases there may be ulcers. 
Treatment consists in prevention and inoculation. The greatest 
care is necessary to prevent the germs being carried from sick hogs 
to healthy herds. The owner of healthy hogs and his family should 
keep away from all pens and yards on other farms, whether sickness 
among hogs prevails or not, if there is any infection in the com- 
munity. Care should be exercised that dogs, stray hogs and other 
animals be kept out of the quarters where the hogs are kept. In 
case of danger, communicate with the state authorities and have 
the herd inoculated. 
10. Rabies, also called mad dog, is an infectious dis- 
ease caused by an invisible organism. The disease is 
transmitted from one animal to another by the bite of 
an animal which is suffering with the disease or by direct 
inoculation. It is more common in the dog than in any 
other animal. 
The dog at first seeks dark places, but is usually restless, and 
after a day or two may go 30 miles 
in a day. He will drink water, eat 
sticks, stones, and bite other dogs, 
horses and cattle, less often man. In 
a few days the dog becomes partly 
paralyzed, is unable to swallow, his 
legs may be affected and he will lie in 
one place, usually dying in a few days 
\ gle A horse that has ies bitten me 
: a mad dog becomes restless, usually 
oe violent and will kick and bite. He may 
break his teeth on the manger and 
oftentimes bites his own flesh at the 
place where he has been bitten by the dog. The symptoms usually de- 
velop in from eight to twenty-eight days, but may not develop for 
six months, The disease runs its course in from two to ten days 
Showing position of swelling. 
