This is doing the rounds at the moment. There are too many hypotheticals.
- How good a shot is the hunter? Is the rifle scoped? Does he have standard cartridges/bullets or belt fed? Is he in a vehicle or standing in a field?
- How long does the fight rage on (10,000 rats are harder to kill due to the numbers, HOWEVER die off in 12-24 months).
- Rats can't kill by themselves, they need something else (like rabies) to do job for them (except one rat in Africa which poisons itself in process).
- "Jacko, a 13-pound bull terrier, set the record in 1862 when he killed 100 rats in 5 minutes, 28 seconds." - If my maths are correct thats 2 hours and 17 minutes to destroy all rats using the lions (less if you opt for the wolves).
I figured: 10,000 rats / 100 in 6 minutes = 100 sessions of 6 minutes. 6 minutes x 100 sessions = 600 minutes. Subtract from that 30 seconds per 100 = 50 minutes. 600 minutes - 50 minutes = 550 minutes. 550 minutes / 4 lions = 137.5 minutes per lion aka 2 hours 17 minutes. Maybe longer though as they are dealing with other dangers as well, HOWEVER rats won't kill a lion.
- Are the other animals only coming for you or each other as well? One would assume they will attack each other due to primal urges.
- Are they all there at the same time or arriving at different times? One would assume in droves.
- There's a Nat Geo Doc on soon (this week I think) showing a leopard/jaguar taking out a full sized croc in the water. Lions are far more deadly.
- Rats and Eagles will provide nuisance value but cannot kill a man not lion.
Based on this I'd go Hunter and Lions.
*Hunter* Would start shooting the 3 bears first from range within minutes. 3 headshots and they are dead within 6 minutes.
*Hunter* Would then move on to the 5 x Gorillas, killing them within 15 minutes. 20 minutes and all Gorillas are dead.
(this keeps the Crocodiles and Eagles somewhat busy/distracted) Crocs are slower on land anyway so yet to arrive.
*Lions* Meanwhile the 4 lions would start taking out 15 x Wolves, disposing of them in short time as one lion can kill several wolves.
*Hunter* Starts taking out the 10 x Crocodiles one by one with a headshot. Within 30 minutes they are dead.
*Hunter and Lions* Then start attacking and killing the 7 x bulls, disposing of them in little to no time.
Leaving only Rats and Eagles.
*Lions* Start tearing apart the Rats
*Hunter* Starts taking out Eagle feasting on animal carcasses and in the sky.
When done they both start on the others animal.
I've probably put WAAAYYY tooo much thought into this.