You saw a Scorbunny-Egg and you notice it was abandoned, so you took it home and kept it warm

After some months the egg still didn't hatch, was it infertal? Once you looked away you saw a blue light (that is how it looked like when a Poké-egg hatches) and a Scorbunny came out, however, pokémon should be energic, but this one was too small too be born yet, Scorbunnies are around 1 feet tall, this one was only 0"6 feet tall, it was quite concerning, it made small, weak sounds that