At Järvzoo you can see all the specific animals of the Swedish and Scandinavian fauna, both big and small. Such as cute little hedgehogs and owls, big elks and oxes, wolfs and bears, lynx, and of course the wolverine (translated the zoo is called Wolverine Zoo).
You may find more information on the zoo here:
The price includes the entrance fee.
The time for the promenad depends on how many stops you want to make or if you just want to take a general stroll through the park.
The minimum time is 1,5h. This give you time to make small stops now and then to look closer at some of the animals and have some of the information signs read to you.
If you just generally want more time to spend looking at the animals just state the time you wish for.
If you want more detailed information (more than what is given in the information placks) on any particular animals it is a minimum of 30 min extra per animal. This is both for the time spent gathering information and the extra time for the promenad.
Though if you only wish to see one or two specific animals with more detailed information given about them the minimum time of 1,5h ought to be sufficient.
If you wish to stop at the petting zoo or the gift shop it requires an extra 30min. This includes a purchase at the gift shop for up to $15.