If it randomly starts making loud sounds and there is no reason why - it is hurt, scared ect. - then there is probably something wrong.
It is a run-on sentence, because there are two complete thoughts expressed without using a conjunction.That is a very loud boat. Something must be wrong with it.or That boat motor is very loud, and there may be something wrong with it.
This sounds like it is an internal problem, and something is wrong with the speakers. Take it to an Apple Genius to see what they can do.
they are really loud
they are excited or are mating
This can mean that the guinea pig was frightened from something loud, like a dog bark or telephone ring.
Only when hungry, anticipating food, communication, or for some other reason, they make an audible noise that sounds like a "Week!"
No, there is nothing wrong. This is normal. I don't know why exactly, but I know this happens to everyone.
Maybe you say something loud or knock
Whenever a sound occurs that is so loud that it hurts a guinea pig's ears the guinea pig may act stunned. Along with that, when hearing a very loud noise a guinea pig's ear(s) will twitch or flop up then down. Please note, that attempting to make the animals ear twitch with loud noises is seriously disrespectful to the animal and should never be done on purpose.
Loud sounds instruments
Yes, most horses react to loud sounds unless trained not to.
Drums, trumpet, violin, and many more, make loud sounds.