Yeah, cheating is about you and your ex, not the dog. If he's attacking dogs, that's animal abuse and the ASPCA or cops need to be involved, before he attacks other animals. The Humane Society can probably help you figure out who to talk to if you can't find a number. Animal abuse is not a normal reaction to this, and this needs to be dealt with before your ex actually kills an animal.

I only voted FYL because F your dog’s life. You and your ex both suck.

I care what he did to your dog! He ought to go to jail for that! I hope your dog is ok.

It might not of been the right way, but good work on getting rid of him! If he’s willing to harm an animal there’s something very wrong with him, it could’ve been so much worse if you stayed

Well hopefully you've learned that if you aren't a liar and a cheat people will be more likely to believe you. Yeah, what your boyfriend did sucks but unless it's in character for him to do it, no one is going to buy the story especially if they know you've be caught cheating. If instead you'd simply broken up with him and then he tried to kill your dog, more people would believe you.

you're an ass for cheating, but he's a piece of s**t for hurting your dog. unacceptable.

You people suck. Even the crowd on the Jerry Springer Show would probably tie your asses to a train and send you to the next town.

You're both in the wrong. Did you call the police? Do you have proof?

Okay, what you did is very wrong and you deserve some sort of punishment. But attempted murder of your dog, or any animal, is not justified. Not to mention he could go to jail/prison for that. He should have found a better way of dealing with your infidelity.