Croagunk's Weaknesses

Best Counters

Croagunk is especially weak against Psychic type Pokemon, they will deal 4x damage to it!

The types that are strong against Croagunk are Psychic, Flying, Ground type Pokemon.

For the best defense, Ghost types have very effective defense against Croagunk, and will be resistant to damage from Croagunk's STAB attacks:

Weaknesses

Croagunk's type is Poison and Fighting.

Croagunk is especially vulnerable to Psychic attacks, it will receive a super effective four times (4x) the amount of damage! Since Psychic type Pokemon are especially strong against Croagunk, you should attack with this type of Pokemon.

Croagunk has a weakness to Psychic, Flying, Ground types. These Pokemon types will be strong against Croagunk, causing Croagunk to take a super effective quadruple (4x) damage from Psychic type attacks, and causing Croagunk to take a super effective double (2x) damage from Flying and Ground type attacks.

Please keep in mind that Croagunk is resistant to attacks from Bug, Dark, Fighting, Grass, Poison, Rock types, and these attacks are not very effective and cause reduced damage, so they should be avoided.