I'll probably add more of these as time passes..
Animal Ages.
All domestic (ticket) animals have the same method for ages.
Maximum Durability is their lifespan.
Durability is how much of that remains.
And the numbers are shown in-game as 1/4th of the value.
Cattle/Horses have a maximum of 500.
Goats/Pigs 300.
And Chickens/Hares 100.
So the maximum 'game' age a chicken can have is 25, while a horse could live to 125.
So..
If you want a pig age 10 with a lifespan of 25...
25X4 gets 200, for the Max durability.
10x4 gets 40, which you then subtract from that max durability.
1048(boar), 100(quality), 160(durability), 200(maxdur)
I Hope some find the information useful.