(v)iew animal, (p)references, (s)laughter
some animals can not be tamed. If you have marksdwarfs in your militia, you can release such animals in a walled off area/secure room, best closed off with a drawbridge. If you have carved the walls into fortifications, your marksdwarfs can shoot through it and will happily train their skills on the animal. On the other hand, you may want to make some weapon traps in a small room and kill the animal using those.
The corpse will likely be taken to your refuse stockpile (most likely outside), and if you have (o)rders, (r)efuse, dwarfs gather refuse from (o)utside on, your butcher will automatically come and pick up the corpse
to release captured animals without taming so they wont be a danger to you:
(b), (j) to build a cage, press x to see all cages seperately and find the one you wanted
(b)uild, (T)raps, (l)ever - somewhere outside the place you built the cage in
(q), to the lever, (a)dd task, (j) link to cage, find the cage and select mechanisms
Now when you pull the lever, the cage will become dislodged (not build anymore) and the animal (or whatever) inside is now out of the cage
somewhere else i wrote more on cage traps and walls, i'll repeat my strategy again here:
wild animals tend to stay near the edges of the map for much of the time. Only rarely do they cross the map through the center, mainly because your dwarfs are there.
If you can use water pools to help you, fine, saves some materials, otherwise, you'll need to build a few long walls. Any creature finding your wall will try to detour around it or has to go through a choke point. Since you cant build too close to the edge, its smart to make a cage trap or two at that end of the wall: anything trying to move around the wall at that end will get caught. Do the same at the other end, and somewhere halfway. It looks something like this:
C = cage trap
X = wall
CCXXXXXXXXXXXXXXXXXXXXXXCCXXXXXXXXXXXXXXXXXXXXCC
Just putting a set-up like this in each direction (north, south, east, west) at the map edge will capture very, very many creatures. Last time i tried this i was having problems with my storage because of the insane amounts of Giraffes, Rhinos and Elepants captured. My butchers were working overtime