Hmmm, good question... what would be appropriate for Zulema's 5th birthday...

Perhaps you could get her a pig?

Alternatively, any large-bodied prey weighing about 20 kg (45 lbs.) or larger such as moose, deer species, cows, horses, buffalos and goats.

It's a special occasion though, so she might like a tapir, elephant or rhinoceros calf, bear species, leopard or Asiatic wild dog (Source)

Plenty of options for you to choose from.