While the original comment, that having a brain gives you free will, is almost certainly false (no-one knows what gives you free will), MgamerBD's response is breathtaking in it's stupidity. Some 'non-instinctive' behaviours I have seen include: -
Bears sliding down a slope, then climbing to the top to do it again (i.e. having fun)
Dolphins playing catch.
Wild blue-tits solving complex puzzles to retrieve food pellets.
Ditto squirrels.
Tool use in ape, monkey and bird species.
Altruism, particularly in primates, e.g. adult chimps (who cannot swim) entering the water to attempt to rescue another chimp in trouble.
This last one is particularly telling. The fundies often brings up animal altruism as evidence against Darwinian evolution. Now we have one trying to claim it's all instinct.
Of course, in the broadest sense, you could argue that none of these things are free-will. Animals are prompted to repeat 'fun' activities because of the endorphin payoff, they learn things because of an 'instinct' to experiment (when frustrated, perhaps) and programmed with 'pattern recognition' to recognise useful variations, and altruism becomes just the 'protective instinct' coupled with a lack of imagination about the consequences of their actions.
Of course, all those arguments could equally apply to us, in which case we would not have free will either.