根据权威信息源，以下是关于兔子的英文介绍，整合了生物学特征、外貌描述及生态习性：

生物学分类

"Rabbits belong to the family Leporidae, which includes hares and pikas, and are small mammals known for their rapid breeding and adaptability to various environments"。

外貌特征

"They have long ears （up to 10 cm）, powerful hind legs, and a soft, woolly coat that ranges from brown to white. Their eyes are often bright red, contrasting sharply with their white fur"。

生态与习性

"Rabbits are herbivores, primarily feeding on grasses and vegetables. Their extensive ear movement helps detect threats before visual detection, and their large ears aid in cooling regulation in hot climates"。

社会行为

"Domestic rabbits are social animals that live in groups, requiring attention and care. They communicate through vocalizations and body language, and are known for their cooperative behaviors, such as synchronized eating"。

品种多样性

"There are over 305 domestic rabbit breeds worldwide, including the European rabbit and various wild species like cottontails. Their size and fur patterns vary widely, making them popular pets and livestock"。