Stages of hibernation (IMAGE)

Society for Neuroscience

Stages of hibernation

Caption

“Torpor” refers to the 10–15 d stages of hibernation in which squirrels are in deep sleep. “Inter-torpor Arousal,” when squirrels are not in deep sleep, occurs for 12–24 h in between Torpor stages.

Credit

Allison Fultz et al., 2026

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