I'm sorry to hear that man ...
Pets are family members, it's like when a human die, there's not much you can do but let the time do its work.
But, try to remember the good memories you had with him, talk about him to someone, you can do it here, I'll love to know how he was, it's always good to speak

Cry, remember all the good memories.

I was 15 when my dog, who was 16, had to be put down. It was the hardest thing to be there for but it had to be done. Just know that they lived and loved a full and happy life. That's what helped me through it.

Yeah, I have been. It just feels empty without him. I stayed with him and held him as he passed. I'm just really tore up.

Just remember: It's better this way. Don't make them live a life full of pain, though they'd love you all the same. They've lived their life to the fullest, and one day when your life slips away you may remember your beloved pet that was with you all those years. Live life to the fullest and have no regrets, as your dog would've been.

I had a cat that I got in preschool and had to be put down due to surgery complications in the summer going into my second year of university. I'll be honest, I was broken. I still cry a year later when I think about him. What kept me going was having his sister still around and being able to care for her and make her life continue to being awesome. My bf kept me close and was a great shoulder to cry on. Just knowing that he isn't suffering helped, but knowing that I gave him the fullest life that I could helped a lot. Just knowing he had a happy 15 years on earth. Don't let the emotions bottle up in you. Letting them out and crying and yelling made me feel a hell of a lot better instead of having them pent up. Don't force yourself to stop grieving either. Take as much time as you need.

Thank y'all. My other dog and cats are helping. It's just rough. I've been crying on and off, and I keep expecting to see him where he lays down. It's unsettling not to see him. I'm coping alright-ish. It's just hard.
I've had him since I was about four. He was my buddy. I jumped in leaf piles with him, he used to slide down the slide with me, we'd play tug of war when he was a pup and drag each other across the house. I just miss the old bastard. I swear I can still hear him snoring. :(