Earline,
as Tony and James have said, either available natural light or photofloods mounted the same as the flash units.
I occasionally get very flash-sensitive dogs when I'm shooting shows and there is really no option in that situation. But in a controlled "studio" environment, you can set up a continuous lighting system that mimics your strobe set-up. I use that with very flash-sensitive people for portraits and it works great.
Good luck,
Jim