Monster Manual, page 35
Amphibious. The bullywug can breathe air and water. Speak with Frogs and Toads. The bullywug can communicate simple concepts to frogs and toads when it speaks in Bullywug. Standing Leap. The bullywug's long jump is up to 20 feet and its high jump is up to 10 feet, with or without a running start. Swamp Camouflage. The bullywug has advantage on Dexterity (Stealth) checks made to hide in swampy terrain.
Multiattack. The bullywug makes two melee attacks: one with its bite and one with its spear. Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d4 + 1) bludgeoning damage. Spear. Melee or Ranged Weapon Attack: +3 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d6 + 1) piercing damage, or 5 (1d8 + 1) piercing damage if used with two hands to make a melee attack.
Swamp