This question does not make any sense. Are you asking what's the meaning of a cow "biting at her rear" or that she's getting ready to give birth and biting at her rear or something else entirely? It almost sounds like a rhetorical question, or a question that answers itself, with you asking what the meaning of a biting her rear is and pretty much answering it by also mentioning that she is getting ready to give birth.
It could mean that a cow is ready to give birth.
Hes ready to battle
Biting can mean different things depending on the context and relationship dynamic. It could be a flirtatious gesture, a sign of passion or aggression, or a form of playfulness. It's important to communicate with the person to understand their intentions and set boundaries if needed.
Do you mean how do lions give birth? Vaginally just like all mammals except for the platypus.
it means that some horses are ready to running with their horse paws
It means they are getting ready to MATE
ready to party!
No not really, your body is getting ready for the real thing. These early contractions are very light compared to the real thing. If you are worried, time these contractions, if they are not steady, they are just your body getting ready for birth.
It could mean that a cow is ready to give birth.
Getting ready - making preparations
"How are you getting ready?"
it could mean your fertile and getting ready for ovulation.
Its means she is making her nest ready for birth.
when they say wind a baseball they mean getting ready to pitch/throw it
Your body is getting ready to have the baby. Maybe your in labor.
If your mouse is getting fat and is starting to nest that means she is pregnant. and is getting ready for her babies.
satire is something humorous, then biting would mean vicious. there can be better definitions.