Answer
There are a few cases of Pokémon getting shorter when they evolve.
- Haunter (1.6 m) into Gengar (1.5 m)
- Porygon (0.8 m) into Porygon2 (0.6 m)
- Dragonair (4.0 m) into Dragonite (2.2 m)
- Gloom (0.8 m) into Bellossom (0.4 m)
- Cosmog (0.2 m) into Cosmoem (0.1 m)
Attribution
Source : Link , Question Author : Pikamander2 , Answer Author : Wrigglenite