These neighbours of mine keep beating their dog, what's the proper way to deal with this in Italy?

Hello everyone, I'm 20M, I just moved to Sicily 2 months ago to finish my studies, started living in my current appartement a month ago now, have noticed this shameful behaviour of a neighbour to say the least, in nutshell I'm 99% sure this guy and his wife are constantly beating their dog, tho I didn't visibly see it, I keep hearing it since my window is 1 meter from theirs, what would happen usually is that the dog would start howling either early in the morning or late in the night, he would go on like that for like 10-15 minutes at a time until it becomes annoying, then either of the couple would barge and start beating on the dog with something, the dog would go Nuts barking and howling in pain, then he would stop barking for a while until he does again and the cycle repeats

I do not know what's either the law or society view on this, so I have no idea if I should be reporting it to someone or talking directly to them or if I'm expected to look away, I would appreciate some insight and opinions on this