stephanie, she doesn't have any desire to herd children, she only does it with small animals. She is terrified of sheep, that is why she was re-homed, she was a useless sheepdog. The guinea pig is not timid, she may be small but she has a big attitude and she tells Meg off if she bothers her.
PetParent, thanks for the info, I have never heard of Trieball, but I will find out more.