KRCC1 and pyometritis: Sixty-seven isolates (95.7%) were positive for fim, 13 isolates (18.5%) were positive for iuc, 18 isolates (25.7%) were positive for hly, 12 isolates (17.7%) were positive for usp, and 19 isolates (27.1%) were positive for iss among the canine pyometra isolates.