So I was randomly in battle and I selected dogmeat to go attack someone or something, and this may sound stupid, but I sent him somewhere by accident, but I dont know where I sent him. Is there anyway of finding him somehow? Please help, thanks.

By sent him somewhere do you mean to a settlement or to a spot in your general location? ("Go over there Dogmeat.")

You can http://fallout.wikia.com/wiki/Fallout_4_console_commands if you're on the PC. Commands for getting back Dogmeat would be -

1. Open up the Console by typing Tilde (~)
2. Type 'prid 0001d162'
3. Hit Return/Enter
4. Type 'moveto player'
5. Hit Return/Enter
6. Hit Tilde (~) again to close the console

Otherwise check the doghouses at Sanctuary, he might be back there.

Yup

Im on xbox one, and I have checked the doghouses, also rang the bell. Nothing yet

Can you load an earlier save? If not, just keep checking the doghouses, there has to be a failsafe surely, and it seems he has turned up at the Sanctuary doghouses for other people in your situation. Might take a couple ingame days.

Uh... ok... so I'll answer both I guess.

If you have more than one settlement, check them all. Try building a doghouse if you can't find him right away. He'll go inside automatically.

If you commanded him to go somewhere in the area, try fast traveling. Whenever I can't find him, I fast travel to my current/closest location and he's right next to me.

If neither of these help.... you'll have to elaborate. Or just reload a save from before you sent him away.

I lost Dogmeat for a game day, though I don't recall how it happened. I went back to Red Rocket (where I found him initially) and he was wandering around.

Thanks so much found him!

Good to know!