Portal Pet...

Lyvandia.

Day #1: Nothing happened.
day#2 Nothing happened.
Day #3 Turned into a Gonk.
Day #4 Nothing Happened.
Day#5: Gained 1 level stat.
Day#6 radioactive Equilor.
Day#7 changed colour to blue.
Day#8: Nothing happened.
Day#9: gained 1 health stat.
Day#10: Nothing happened.
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Day#15: changed to green Crindol.
Day#19: changedhalloweenZetlian!