Attitude in heraldry means the position that a particular animal or figure is shown in on a coat of arms or crest. This means the way that the animal or figure is standing or moving.
For example, if a lion is shown with its front paws up, it is said to be "rampant." If it is standing on all four feet, it is "passant." If it is lying down, it is "couchant."
The attitude is an important part of the meaning behind a coat of arms, as it can symbolize different things. For example, a lion shown with extended claws and a menacing posture might symbolize courage or strength, while a lion lying down might symbolize peace or serenity.
So, attitude in heraldry is like the way that a cartoon animal might be drawn standing or sitting a certain way to show its mood or personality. But in heraldry, it is used to give important meaning to a coat of arms.