Do you tell owners their pet tried to/did bite?

Apparently a client got mad when they were informed that their pet tried to bite a DVM. Client claimed their pet never tried that with a different DVM.

Now we are not allowed to tell owners their pet tried to or did bite staff.

Opinions and input would be nice as this has pissed me all the way off. This isn't the first time staff has been sacrificed to please a single angry person.