Lambs are usually killed before they are one year old and eaten by humans.
Examples (Wiktionary)
Mandarin
豺狼必与羊羔同食;狮子必吃草与牛一样;尘土必作蛇的食物。在我圣山的遍处,这一切都不伤人,不害物。这是耶和华说的。
豺狼必與羊羔同食;獅子必吃草與牛一樣;塵土必作蛇的食物。在我聖山的遍處,這一切都不傷人,不害物。這是耶和華説的。
chái láng bì yǔ yáng gāo tóng shí ; shī zi bì chī cǎo yǔ niú yī yàng ; chén tǔ bì zuò shé de shí wù . zài wǒ shèng shān de biàn chù , zhè yī qiè dōu bù shāng rén , bù hài wù . zhè shì yē hé huá shuō de .
The wolf and the lamb shall feed together, and the lion shall eat straw like the bullock: and dust shall be the serpent's meat. They shall not hurt nor destroy in all my holy mountain, saith the Lord.