The Shovel-Snout Snake's small adult size, rarely exceeding fourteen inches in total length, means that the enclosure footprint does not need to be large. However, the specific requirements of a fossorial species make enclosure selection more nuanced than simply choosing the smallest available terrarium. A ten-gallon glass aquarium or an enclosure with a floor area of approximately twenty inches by ten inches provides adequate horizontal space for a single adult Shovel-Snout Snake. More important than floor area is enclosure height and, critically, the depth of substrate the enclosure can accommodate. Because Prosymna species spend the overwhelming majority of their time below the surface, the enclosure must allow for a substrate layer of at least four to six inches, which means that a standard ten-gallon tank with a twelve-inch height actually provides less usable vertical space above the substrate than one might initially assume.
Front-opening terrariums designed for reptiles offer several advantages over traditional top-opening aquariums for housing Shovel-Snout Snakes. Accessing the enclosure from the front rather than the top reduces the amount of disturbance to the substrate layer and allows the keeper to perform maintenance, place food items, and check on the snake without disassembling the carefully constructed burrowing environment. Top-opening enclosures require reaching down through the substrate, which can collapse established tunnel systems and stress the animal. Several manufacturers produce compact front-opening terrariums in sizes well suited to small fossorial species, with sealed bottoms that contain moisture and prevent substrate from leaking.
Plastic tub systems, commonly used by breeders and keepers who maintain multiple small snakes, are a practical and effective housing option for Shovel-Snout Snakes. A six-to-fifteen-quart plastic storage container with ventilation holes drilled into the sides provides a secure, lightweight, and easily cleaned enclosure. The opaque walls of a plastic tub also create a darker, more secure environment that aligns with the snake's preference for concealment. Ventilation holes should be drilled with a soldering iron or a step drill bit to produce smooth openings that will not abrade the snake's scales, and they should be positioned on the sides rather than the lid to prevent substrate from blocking airflow when the snake pushes material upward.
Regardless of enclosure type, security is a paramount concern. Shovel-Snout Snakes are remarkably adept at exploiting even minor gaps in enclosure lids or doors. Their small head diameter and smooth, cylindrical body allow them to squeeze through openings that would seem impossibly tight for a snake of their body mass. Screen-top aquariums must be fitted with sturdy clips or a locking mechanism, and front-opening terrariums should have magnetic or latch closures that the snake cannot push open from inside. Any ventilation holes in plastic tubs should be smaller than the snake's head diameter at its widest point, which for most adult Prosymna species is less than eight millimeters.