How long should a ‘honeymoon phase’ last for new dogs?

The “honeymoon phase” for a new dog typically lasts anywhere from two weeks to one month.

During the first few days, a dog may seem perfectly well-adjusted and problem-free, but you should not assume that they are fully integrated or showing their true personality yet, as this is just the beginning of the honeymoon period. Because it takes time for this phase to wear off and for a dog to fully settle in, you should take the assimilation process very slowly—expecting it to take weeks or even months—and maintain constant supervision and safe management during this time.