Colic may accompany or precede it
When acute, colic may accompany or precede it. In proportion to the spasm will be the violence and the danger of the disorder. Sickness is mostly witnessed a little time prior to the attack, and the matter vomited has a peculiarly disagreeable and acrid odor. The dog does not again consume that which the stomach has thrown off, but sneaks away dejected, and afterwards seems dull. Sickness will occasionally continue throughout the complaint, but in general it departs as the disease appears. Thirst, however, is always present; and there is also a disposition to seek cold things and places. The pulse is quicker, but not stronger, and hardly at first less thin than during health. There is no pain on pressure being applied to the abdomen. The membranes of the eye are not injected; they may be a little deeper in color than is strictly natural, but occasionally they are the reverse. If, however, the anus be gently forced open, so as to expose the terminating surface of the rectum, the membrane there will be found more red, and perhaps less clear in tint, than it ought to be; and the presence of purgation, attended with a violent resistance to the administration of clysters, will leave no doubt as to the character of the affection.
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