Pets and wildlife are reacting to sudden darkness as a total solar eclipse passes over Spain and parts of Europe this Wednesday [1].
These behavioral shifts matter because the abrupt loss of daylight can trigger deep-seated instincts in animals, leading to confusion or distress in domestic pets.
Dogs, birds, and other pets are experiencing a disruption in their normal activity patterns [2]. Many animals act as if it is night, with some birds returning to their trees prematurely and pets seeking comfort from their owners [2, 3]. This sudden change in environment often manifests as anxiety or silence in species that are typically vocal during the day [2].
The phenomenon is driven by instinctual responses to the disappearing sun. The abrupt darkness triggers night-time biological cues, which causes animals to behave according to their nocturnal rhythms despite the actual time of day [3].
This event on Aug. 12 [1] is the first of three major eclipses visible from Spain this year [1]. Similar behavioral changes were observed in the U.S. during a comparable eclipse in 2017 [3, 4].
Observers in the UK and other European regions are also seeing these effects as the moon obscures the sun. While the event is a celestial milestone for humans, for animals, it is a confusing sensory experience that disrupts the expected cycle of light and dark [2, 3].
“Animals act as if it is night, with some birds returning to their trees prematurely.”
The reaction of animals to solar eclipses highlights the reliance of wildlife and pets on circadian rhythms. Because these creatures depend on light cues to regulate sleep, hunting, and social behavior, the artificial night created by an eclipse creates a temporary biological conflict, resulting in the observed anxiety and confusion.
