Possible Clues:

• Great Plains burrower
• Plains animal that tunnels
• Rodent that barks
• Setter chasing after grassland squirrel
• It's not a canine
• Yielding ape or rigid rodent
• Animal that's more akin to a squirrel than a canine, despite its name
• 'It can wait'
• Atmosphere breathed in by podgier foreign rodent
• Tunnel-creating rodent