Reiner and Berthold, also known as the Armored and Colossal Titans, attacked Attack on Titan because they were members of the Marleyan Warriors sent on a mission to infiltrate the walls and gather information about the people living there. Their ultimate goal was to locate and retrieve the Founding Titan, which they believed was in the possession of Eren Yeager. By attacking the walls and causing chaos, they aimed to create an opportunity to carry out their mission and fulfill their duty to Marley. **

Argentavis, an extinct species of giant bird, is believed to have been a scavenger rather than a predator. There is no evidence to suggest that Argentavis actively hunted or attacked other animals. Its large size and powerful beak were likely adaptations for feeding on carrion rather than for hunting live prey. **

The attack on Marley in Attack on Titan is a coordinated assault by the Paradis Island forces, led by Eren Yeager and the Survey Corps. The attack is a retaliation for Marley's previous aggression and attempts to invade Paradis Island. The Paradis forces use the power of the Founding Titan and other Titan shifters to launch a surprise attack on Marley's military and government, causing widespread destruction and chaos. This attack marks a turning point in the series and sets the stage for a major conflict between the two nations. **

Hitler viewed the Portuguese as fellow Aryans and considered them to be part of the broader European racial hierarchy. He saw them as racially acceptable and did not view them as a threat to his vision of a racially pure Germany. Additionally, Portugal was a neutral country during World War II and did not pose a direct military threat to Germany, which may have been another reason why Hitler did not attack them. **

A heart attack occurring during a panic attack is rare. While panic attacks can cause intense physical symptoms such as chest pain, rapid heart rate, and shortness of breath, these symptoms are usually not indicative of a heart attack. However, it is important to seek medical attention if you are experiencing these symptoms to rule out any serious medical conditions. It is always best to consult with a healthcare professional if you have concerns about your heart health. **

Octopuses are generally not aggressive towards humans and will only attack if they feel threatened or cornered. In rare cases, octopuses have been known to bite or spray ink at humans, but these incidents are usually a defensive response. It is important to respect octopuses' space and observe them from a safe distance to avoid any potential conflicts. **

Giraffes are not typically aggressive towards humans and are known to be gentle animals. However, in rare cases, giraffes may become defensive or feel threatened, leading to aggressive behavior. It is important to remember that giraffes are wild animals and should be treated with caution and respect to avoid any potential attacks. **

No, Austria did not attack itself. The attack on Austria during World War II was carried out by Nazi Germany in 1938, in an event known as the Anschluss. This was a forced annexation of Austria into Germany, orchestrated by Adolf Hitler. The Austrian government at the time was powerless to resist the German invasion. **