Saliva drips from the mouth of a cow because of mouth lesions The position of this pig suggests sore feet...
An older lesion has a dry surface
Ruptured foot-and-mouth vesicles on a pig's snout
Blanching of the coronary and interdigital epithelium vesicle and a ruptured vesicle in the interdigital area.

Graphics
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(Photos courtesy of the U. S. Department of Agriculture Animal and Plant Health Inspection Service)
Blanched epithelium vesicle on the end of a teat.
A tongue with three small, unruptured vesicles After a foot-and-mouth infection of the epithelium, the fluid leaks out and leaves areas of necrotic-appearing epithelium Ruptured vesicle in the gingiva of the dental pad. This sign could be confused with a traumatic injury. The whitish areas on the surface of the tongue are dry foot-and-mouth lesions...

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