"Eight deer" in Engpsh can be said as "eight bucks" or "eight does".
The term "buck" is used to refer to a male deer, while the term "doe" is used to refer to a female deer. The origin of these terms comes from Old Engpsh, where "buck" comes from the word "bucca" and "doe" comes from the word "dæge".
Examples:
I saw eight bucks grazing in the field. (我在田野里看到了八头雄鹿在吃草。)
The hunter tracked down eight does in the forest. (猎人在森林里追踪到八头雌鹿。)