Jag brukar bo i båt. :)
It appears we have concluded that you are, in fact, not a moose, then.
What is the difference between bor and bo? Is it that bo can be in future tense as well?
You probably already know by now what the difference is (since you're on level 21 and you wrote your comment nine months ago), but 'att bo' is the infinitive (to live) and 'bor' (I live, you live, and so on) the present tense.
why does "bo" not end in "a" like all the other infinitive verbs
Not all verbs end in -a in the infinitive. It's the norm, but not completely a rule. The exceptions are usually old, frequently irregular.
'Moose tend to live in the forest'?
The course generally makes a difference between tending to do something, and usually doing something. I'm leaning towards changing this stance for the next tree, though.
Eller i hus med röd färg.