Is this available only at certain times of the year or is it an event that is past? Trying to get achievements :)

It was a past event, and unfortunately is no longer available (I missed it too :c )

bummer! may I ask you another unrelated question while you're here?

How do I turn a pet into a Bhakoru?

Bhakorus were only available from an even older event. You could ask a user with an open pet slot to make one for you (I think has access and is usually willing to help). Alternatively you could turn a pet into a Nostalgic Bhakoru, and then use a different potion on it for the color you want (but it's a little expensive since you'll need an too and it's not available free until December)

right, okay! I've actually already made my nostalgic Bhakoru :3 I just need (want) two more heh, thank you!

Good luck, I hope is able to help you out, or that you can find someone else with access c: Unfortunately that event was also before my time and I almost never have an open pet slot

I could make you a Bhakoru or two! Just message me what you want the names to be and send me a friend request. :)

I just checked and it is possible to Morph an existing pet into a Bhakoru.