An average giant eagle has a wingspan of 15 to 20 feet and stands 8 to 12 feet tall. They are intelligent creatures, and many speak Common or another language common in their home territory.

Individual giant eagles are rarely encountered alone, as they prefer to live in loose communities. However, when they hunt they do so in a solitary fashion, with each eagle choosing a single creature as prey. As they can communicate with each other, it is extremely rare for two of them to make the mistake of attacking the same prey; in fact, it is not uncommon for one to attack alone to scatter a group of prey so they can each more easily choose a victim.

Giant eagles mate for life. If a nest with eggs or hatchlings is threatened, both parents will fight without checking morale, and other giant eagles in their community may come to their defense but will still seek to scatter any opponents so as to attack them one on one