Under what circumstances might a kangaroo mouse use all four limbs for locomotion?

Answer

When moving slowly

Although optimized for hopping, the physical description notes that when moving slowly, the kangaroo mouse may utilize all four limbs, switching exclusively to bipedal motion when covering distance or escaping threats.

Under what circumstances might a kangaroo mouse use all four limbs for locomotion?
mammaladaptationrodentKangaroo Mouse