What are the omens Cassius has observed?

In Shakespeare's "Julius Caesar," Cassius observes several ominous signs that foreshadow trouble for Rome and Caesar's rise to power. He notes the strange behavior of animals, such as an owl hooting during the day and lions roaming the streets, which he interprets as bad omens. Additionally, he reflects on the unnatural storms and the fear exhibited by the public, suggesting that these portents indicate a shift in the natural order, warning of impending chaos. These observations fuel his determination to take action against Caesar.