have you ever seen a boxer (dog...
) that is like black and light brown all mised up?? That's brindel. Also some cats and other dog breeds have it. Some people say cat's are 'tortishell' but it's the same as brindle I'll have to find a link to a brindle...
Here is a great pic od a brindle Abby...very cute!!
http://www.loran.karoo.net/cavy/max2.jpg