Your animals may share messages or information that you won't recognize right away. This is normal and it occurs in just about every session. The first reason is that I'm not 100% accurate. No one is. It can be that I got the content of the message right but delivered it to you wrong.
Even though you think you know everything there is to know about your animal there are some things that will just be 'new information' to you. Keep an open mind and accept what they share.