Where do dogs go when they die?

I lost my sweet boy on January 7th I already created a story about him and the whole situation with the title “My dog passed away January 7th because of my stupid actions”. I feel so heartbroken and devastated that he’s gone forever we had literally finished sharing a chicken strip from canes together and then a couple hours later I find his small body on the side of the road in a pool of his own blood. I feel so horrible not only was my sweet baby young but he also passed away such a horrible death at only 4 years old. He was just trying to come back home :( my sweet poor boy I miss him so so much I can’t handle this anymore I pray and hope that he’s having a bunch of fun but at the same time I’m scared at the fact that when we pass away it might be external darkness forever or like how it was before we were born like we didn’t have consciousness yk? I just really hope somebody can tell me if dogs do make it to heaven or if it’s real, I don’t want to say I don’t believe in God because I do but I’m just scared. I miss my baby I hope he’s having a bunch of fun