No. But they would if they fell off. If they fell off or came off by other means then they need to be replaced. But otherwise, if they stay on the bovine for that bovine's life, they do not expire.
Not all ranchers do. Microchipping every animal can be quite expensive, and it's often much more cheaper to use eartags to track their cattle.
yes they do expire.
does ajinomoto expire
No they do not expire!
No, paychecks do not expire.
It depends on the identification legislation in your country. In Australia, all sheep and goats are required to have a tag in their ear with the Property Identification Code written on the tag when the sheep or goat leaves its property of birth.
This milk will expire tomorrow.You coupon will expire next week.
Expire is a verb.
No, they do not expire.
No, after you purchase your account, it will not expire.
No, it doesn't expire.
Turkey's can expire if they are not stored properly.