Took me a while to take pics but its done. After an hour of wrangling and getting dirt all over my phone, here are the pictures. Notice the difference in head shape and size. Bottom jaws are visible from top view and snout is very much longer. This Tiger Salamander was larger than the one JessKB got.
Meets all criteria of (cannibalistic Tiger Salamander). Though I couldn't find any pictures of Cannibal Tiger Salamanders anywhere for comparison, besides skull sketches. I did do some reading and most or all the articles mentioned larger head size, larger mouths, elongated vomer/snout and enlarged recurved teeth. Though I haven't checked the teeth, doubt that I will. The seller said they were cannibal morphs but I had to look into it myself.
Cannibalistic individuals have been recorded in multiple species of Tiger Salamanders. Though most individuals are or can be cannibals only few change into the cannibal morph. One article suggests that populations that do have cannibal morph Tigers Salamanders usually means that all the Tiger Salamanders in that population have the genetic cues to become a cannibal morph. The cannibal morph process begins when they're larvae.
Here are the pictures, some of the pictures in the comparison shots aren't all mine.