"Anxiety behaviors" refers to actions or habits that someone may display when they are feeling anxious or worried. It can include things like nail-biting, fidgeting, or avoiding certain situations. Full definition
Remember, too, that your kids may experience these separation anxiety behaviors even if there's no reason for them. (thespruce.com)
Typically, though, sudden anxiety behaviors in preschool / early elementary aged children are simply another normal stage of development, an indication of cognitive growth. (littleheartsbooks.com)
According to these authors, dogs that exhibit separation anxiety behavior suffer from an underlying negative affective state. (scratchingsandsniffings.com)