DND_Reborn
The High Aldwin
That's a good point about finesse weapons. I guess I am just so used to people to take finesse weapons defaulting to DEX I forget you can of course still use STR.The dire wolf's stat block is perfectly consistent with their natural weapon attack having the finesse property. A rogue who has higher STR than DEX can still choose to use STR for their finesse weapon attacks; and they will, since they're better that way.
As to why wolves' natural weapons have something like the finesse property, who knows? But thinking of it along the lines of what a monk can do makes sense to me: monks are supposed to have a particularly instinctive control over how they attack with their body. Makes perfect sense that a wild animal would be the same way.
No idea about the ghast's bite though. That does seem pretty weird... As it is, I guess they can choose to make a slightly more damaging attack with a slightly lower chance to hit, which I guess if you're facing someone with a low AC and high CON save (or with a low AC and very few HP) might be slightly more effective?
If you think of (particularly) aggressive monsters (such as wolves and dire wolves) as having "training" in their natural weapons similar to a monk "training" in unarmed strikes, the idea of them being able to use DEX or STR, whichever benefits them most, makes some sense.