I was wondering if there are any ways to expand a pet's Treasure Chest other than zapping?

I was going to paint Clement, but then I remembered he don't have much space in his treasure chest. XD

[item2=Magical Keepsake Box] gives you more space (1-3 randomly). You can also buy a [item2=Multi-Compartment Keepsake Box] from the Cashshop, which gives you way more spaces at once ^^ Don't knwo exactly how much, but I think 30 is the maximum of this box.

from the Millionaire Center expands (at random) 1-3 extra slots.

Ah, I see. ^^ Thank you very much!!

Pet's Treasure Chest expands randomly by Random Event. I had 5-7 such events.

That happened to me once too, but its really too slow and random for me. XD

Yeah, I've had the random event happen to me a few times... actually, come to think of it, I've had more of those happen than any other "rare" event. o.o

Good luck!

The Multi-Compartment Keepsake Box from the Cash Shop that mentioned gives 10 - 15 additional treasure chest spots by the way. :)