Rosie, a tan, 4-year-old female, was last seen in the Mountain Lakes Preserve, according to the pet advocacy group.
While Rosie was said to be friendly, she was also thought to be scared, according to the group, which urged anyone who spots her not to approach.
Anyone with information on Rosie is urged to call 908-797-9776.
The Lost Pets of the Hudson Valley can be found online.
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