Eyelashes

 Do you mean the actual eye lashes or the whiskers above the eyes?

i trim them once in a while. moca's get WAY long and start bugging her. if it wasnt for that i'd leave them. they're so pretty!

 Some dogs have really, really pretty eyelashes. Cockers and Shih Tzus, in particular, sometimes end up with really nice, defined lashes. I have a few customers who prefer their dogs eyelashes left long. The only problem? You have to trim the bangs, and sometimes.... you catch the lashes, even if you're super careful. The dog doesn't have to move anything but it's eyes to move the eyelashes. I suspect that's what's happening with your girls.

I have a shih tzu as well.  I think they are so pretty when they are long, but then they tend to make her eyes water.  (This in turn causes her "eye boogers";).  So I do trim them every once in a while.  I prefer to trim them rather than have the groomer do it, cause I can catch her when she's really tired and wont fidget.

I leave both my girls eyelashes long. Bella we got about a month and a 1/2 ago. I going to see how long her hair gets (as they said she was a Shih Tzu ) as her hair is so easy to keep groomed. Molly I think has a one of a kind cut. Her hair is so soft its hard to keep her mat free so I leave her face and tail long and cut the rest. She is the true lion dog. Anyway I like her hair this way and she lives with me sooooo.

Both the girls have beautiful eyelashes I don`t think I would never cut them unless they cause a problem with their eyes.

there's a little dog who comes in to work who has lashes that are over two inches long..I swear it looks like a handlebar mustache. The groomer (there's a groomer in another section of the vet clinic) says the owner is always very specific to not cut them, so they're always left intact. However, she shaves the rest of the body completely down, so it looks a little bit odd