It is important, however, to differentiate normal feline behaviors from abnormal ones, as some behavior changes in aging cats arise from pain and are definitely not normal. (ahna.net)
We've found it can be helpful to see examples of a normal head shape before looking at abnormal ones. (cranialtech.com)
We chatted easily about our gap years (his was possibly the most abnormal one I have ever heard about!) (30datesblog.com)