The past couple of springs I have had a certain number of blooms that were shredded into ribbons as soon as they opened. I couldn't figure out what could have done that, but finally last year I found a cloven hoof print in the soil next to a shredded bloom. Yes, they run their teeth through a bloom enough to shred and taste it, and then reject the taste. Irises are toxic, and apparently taste pretty foul. Probably it's only the youngest deer who try tasting them.
