Missing cat!!! (Nonesuch Pond, Natick)

My dear cat Sundae has been missing since Sep 26th. He could have been chased by a coyote and gone into hiding. He was last seen near Alden St, Oak Hill Rd and Winter St, Nonesuch Pond area. He is a bicolor (white and orange) British shorthair, about 18lbs. Please help us spread the words and reach out with any info.