Do dogs with low growth and less active could have down syndrome?

Well... the manual doesn't say to lower the feed dogs before installing embroidery unit, but carriage operation is likely no different then free motion which requires feed dogs lowered. So I'd say lower feed dogs.

I didn't find exact model but following is what the Brother site gave me for LB6800...
https://download.brother.com/welcome/doch000184/885v31_v32_v33_om04en.pdf

Wow--- Wash all that you can with hot water, then, pillows, all cloth in dryer on high might kill the nasties. Wash the dog! Mattress in hot sunshine for some hours . Lysol cleaned my mattress, maybe spray it on your carpet. If heat works, use a hair dryer everywhere. For outside, make a 'tea' of cigarette water - 3-4 broken cigs to a liter of water. You need much more. Soak overnght and then spray on the dirt and patio, etc. Stuff is deadly! Try it on a patch of grass to see what happens

Heated dog beds can be great for dogs who constantly suffer from sore muscles or have arthritis.

In your case, choosing small low-calorie treats is the best thing you can do in order to keep your dog slim and healthy; although in case your dog is active you should enjoy more flexibility in choosing the right treat.

huh?

It usually takes about 3-4 days. Give it time, but if she has been pregnent for over about 7 days, i'd say she has a stuck pregenency. You can get dogs stuck pregent if you fastforward time, by changing your computor clock. If you've done this, there is no way (that i know of) of getting ur dog un-pregnent.

Here are some common reasons that the fabric won't feed:
1. Stitch length is set to zero, or machine is in button hole setting
2. Feed dogs are dropped (free motion setting)
3. Broken gears (typically in old singers)
4. Presser bar not coming down - may be bound up.
5. Lots of lint under the needle plate (in between the feed dogs) preventing feed dogs from raising.

Hope this helps.