Dogs act out because they are expressing their needs. Often a dog barking means they are unhappy or lonely and it’s a symptom of the problem, not the actual problem. Dogs are social animals and crave human attention and they do get bored and lonely.
Spending 8-10 hours alone in a crate, tiny laundry closet, or even outdoors is too much for most dogs. It can lead to separation anxiety and destructive behaviors including chewing, soiling, digging, and nonstop barking or howling — even depression in a timid dog. Better choices are doggie day care, a mid-day visit from a pet sitter, or a canine companion. Adult dogs can go 4-5 hours in a crate but need exercise before and after.
Many people get a second dog because they think that it will help ease the boredom. It does help but dogs are social animals and crave human interaction. Please be sure to allot half and hour a day, twice daily to keep them happy and bonded to you and your family. Also, use interactive toys to create amusement and keep them interested while you are gone.
Love your dog, love spending quality time with him.