何頭

how many (large animals)

how many; what number + head
noun Rare #35,074
how many (large animals) Used to ask the number of large animals; 頭 is the counter for them.
JA: 何頭の牛を飼っていますか。
EN: How many cows do you keep?

野生動物何頭

Wild animals? How many of them?

— デッド・ドント・ダイ (2019)

何頭

With how many animals?

— デッド・ドント・ダイ (2019)

何頭もいた

There were several tigers.

— 海の上のピアニスト (1998)

牛は何頭飼ってるんですか

How many cows do you keep?

何頭牛を飼ってるんですか

How many cows do you have?