Blind Dog (5e Creature)
From D&D Wiki
Small beast, unaligned
Blind Senses. The dog can't use its blindsight while deafened and unable to smell.
Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one creature. Hit: 3 (1d4 + 1) piercing damage.
These dogs have, through generations of mutations, adapted to the Zone. This led to the enhancement of smell and hearing, but a complete loss of sight. Relying more on their senses, blind dogs instinctively avoid anomalies and radiation. Knowing stalkers use this to their advantage. If you see a pack of dogs running one direction, but then suddenly stopping and going a different way, this means that somewhere there is an anomaly or an area of radiation.