Hello everyone. I have learned a vast amount of knowledge concerning guinea pigs from this forum. It has been very helpful. But I'm still a little confused about the differences between a rumble and a purr. I've found mixed comments about both. Some say purring is good and some say purring is bad. Same with the rumble sound. I have also found that some people think the rumble sound is a purr and the purr is the rumble. I just need help sorting out the two sounds. What they mean and what they sound like. Thanks