I got my first pet at 25 bags. Up to ~70 or so and I've gotten 3x zangar spore, 1 periwinkle calf, 1 nightmare bell. still waiting for seaborne spore.
unrelated, but listing out of frustration... 4x rattling cages, all with the icehoof
at 84: 4x zangar, 1x peri, 1x bell, still no seaborne!