Sleeper Snake (alive)
Animal sleepers are very specific. They randomly 'use up' a spawn of the assigned group but the spawned animal type is exactly what you place.
Where to find (79 POIs)
Correa Rockworx (tier 5), Ostrich Hotel (tier 5), The Last Sunset Nursing Home (tier 5), Vanity Tower (tier 5), Aranea Caverns (tier 4), Downtown Marketplace (tier 4), Joe's Junction (tier 4), NDC Checkpoint Four (tier 4), Seedy Manor (tier 4), Hexagon Hideaway (tier 3), Journey's End (tier 3), Junkville Saloon (tier 3), Midway Clinic (tier 3), NPD 3rd Division (tier 3), Pop's Pawn & Bel's Bakery (tier 3), Post Office #2 (tier 3), Ranger Station Alpha (tier 3), The Road Gentleman Truck Stop (tier 3), Towersley Estate (tier 3), Town Square Apartments (tier 3), A1 Auto (tier 2), Aldos Cabinet (tier 2), Animal Hospital (tier 2), Boar Barn Fields (tier 2), Film Fanatic's house (tier 2), Huenink Family Farms (tier 2), Jericho Ranch (tier 2), Mason's Barn (tier 2), R. Thornbury Residence (tier 2), The "Broken Dreams" house (tier 2), The Animal Hoarder (tier 2), The Breather's Pocket (tier 2), The Byington Residence (tier 2), The Engall's Residence (tier 2), The Sinkhole House (tier 2), Abandoned Shady Shed Farms (tier 1), Crotalus Rest Area (tier 1), First Church of God (tier 1), Honeysuckle Trailer Park (tier 1), Motel Seven (tier 1) and 39 more.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.