The spotted salamander is the only salamander in the state with bright yellow spots.
During the breeding season, males (bottom) have a swollen vent, that appears relatively square with small granules on the distal end. 

spotted salamander egg mass

wood frog egg mass
The spotted salamander egg mass has a smooth outer gelatinous membrane surrounding the egg aggregation, which gives clear egg masses a halo appearance surrounding the dark embryos.  In contrast, wood frogs (Rana sylvatica) egg masses lack the smooth outer membrane and therefore are bumpy.