A caveat: If you're working to modify serious fear or aggression in your puppy, please hire a qualified professional to help you. (operationsocialization.com)
My children have serious fears about this and we have struggled since the abrupt move and expenses. (thezebra.com)
This creates a problem for people with long commutes, but violating the guideline can cause physical problems in the dog as well as serious fears that include separation anxiety. (vin.com)