This may be the most normal behaviour in the list, but occasionally your cat may rub its face against your leg, or any random object. (petsmagazine.com.sg)
It's not normal behaviour for someone to ask you for money when you've only just started dating. (eharmony.co.uk)
How can a puppy in a pet shop be free from fear and distress and able to express normal behaviour when it should still be with its mother? (marcthevet.com)