Two high schoolers made a map of Bay Area coyote sightings. They never guessed they would document a rare animal with a genetic mutation.
Arnav Singhal was at Guadalupe Oak Grove Park in San Jose with his father and 4-year-old sister on a recent Friday afternoon when he saw something dart across the grassy clearing and leap onto a gnarled tree branch.
The 15-year-old sophomore at Los G... [6004 chars]