My daughter and son-in-law have a 'Blue something pitt, cant think of the breed right off. We were visiting with them and they have a two year old Pitt and a one yr old Lab. Zeke (the pitt) is very jealous of the lab (Archer). While sitting in the kitchen talking we heard Zeke growling. My daughter and I turned to see and Zekes eyes were glowing red. When my daughter saw she called out in a strong voice "Ezekiel!" We saw his eyes return back and the red literally receded back to normal within maybe two seconds. This dog is a very well loved and obedient dog. He is normally very loving and sweet. My daughters husband I dont think believes us and thinks maybe we are exaggerating some. But I'm telling you I and my daughter both saw that dogs eyes GLOW red! Has anyone here heard of that? Do their eyes do that when they become angry? I'm just a little freaked out on this.