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The earliest "ice-out" ever recorded on Douglas Lake at the University of Michigan Biological Station occurred last month, setting another record for the mild winter in northern Michigan.
Deer, caribou, bison and other similar animals are often infected by a range of internal parasites, including worms called helminths. Although many of these infections are not lethal, they can still impact health or animal behavior.
For example, infected animals can eat less grass or other vegeta