Dewgong loves to snooze on bitterly cold ice. The sight of this Pokémon sleeping on a glacier was mistakenly thought to be a mermaid by a mariner long ago. Its streamlined body has little drag in water. The colder the temperature, the friskier it gets. Its body is covered with a pure white fur. The colder the weather, the more active it becomes.
Pokédex entry #87
dewgong in Pokémon GO
It's possible to hatch dewgong from an egg?
No, dewgong can't be hatched.
Which are dewgong’s strengths and weaknesses?
dewgong is a ice and water type Pokémon. ice type pokémons are strong against grass, ground, flying, dragon pokémons but weak against water, ice pokémons. water type pokémons are strong against fire, ground, rock pokémons but weak against water, grass, dragon, electric pokémons.