You’re allowed to experience grief for your dog. It’s a natural emotion, and research shows pet owners often mourn pets on the same level as human companions.
To help you accept the loss of your dog, you can try the same methods that can help with the loss of a person:
expressing what you’re feeling through talking, journaling, art, or composing
honoring your pet with a memorial, donation, or charitable endeavor
taking care of yourself by eating right and getting plenty of sleep
visiting with others who care for you
joining support networks
seeking grief counseling
find outlets, like fitness classes or hobbies