Poisonous Snake

Tiny beast, unaligned
Armor Class 13
Hit Points 2 (1d4)
Speed 30 ft., swim 30 ft.
STR
2 (-4)
DEX
16 (+3)
CON
11 (+0)
INT
1 (-5)
WIS
10 (+0)
CHA
3 (-4)
Senses blindsight 10 ft., passive Perception 10
Languages
Challenge 1/8 (25 XP)
Actions

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 1 piercing damage, and the target must make a DC 10 Constitution saving throw, taking 5 (2d4) poison damage on a failed save, or half as much damage on a successful one.

Monster Manual (SRD)
  1. DnD 5e Monsters › Poisonous Snake