By the way, I have two Dachshund, and the other never did.
Thank you.
Some people think dogs eat grass when they have an upset stomach. Since grass is not very digestible, many dogs do vomit after eating it, but this is not always the case. Some canine grazers show no sign of gastric distress before or after eating grass, while other dogs always vomit after munching on grass. Do those dogs eat grass because they already have an upset stomach and they want to vomit, or do they vomit simply because the grass upsets their stomachs? That's a question with no clear answer.
Another common explanation is that dogs eat grass to make up for a vitamin deficiency or a lack of roughage in their regular diet. It's unlikely that eating grass will actually add any essential nutrients to a dogs diet, and many healthy dogs who always eat a perfectly balanced diet also eat grass.
Most veterinarians agree that dogs eat grass simply because they like the taste. Eating grass is not a sign of illness. If, however, there are signs of ill health such as excessive vomiting, vomiting not associated with grass eating, loss of appetite, diarrhea, weight loss, lack of energy, or any other symptoms of illness – call your veterinarian.
If you want to discourage grass eating and the vomiting that follows, frequent lawn mowing can help. Since clumps of tall grass seem to be especially appealing to most grazers, keep grass well trimmed around the edges too.

dogs are stupid, i know a few dogs who do that, not sure why. some animals need grass to help them digest stuff.
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Don't worry, that is common. My dog does the same thing. I think that grass helps them digest food or helps their body, that's probably why they eat it. Maybe, some fertilizer or something just makes them vomit it.
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Most dogs eat grass because they have an upset stomach and the grass makes them get it out.However if he does it all the time he
might need to see the vet.
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Basically, dogs will sometimes ingest grass to induce vomiting, to help with indigestion and upset stomach.
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Doggs (and cats) eat grass when their stomach is upset purposely to make themselves throw up.
if your dog keeps doing this, something is upsetting his stomach. The food you feed him may be disagreeing with him, you might want to try changing it. If that doesn't work, I'd take him to the vet.
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There is something lacking in your dachshund's diet like perhaps Chlorophyll which is abundant in grass.
His body extracts what is needed from the grass and he vomits up the rest.
.
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dogs eat grass whenever they have an upset stomach. Usually to much of it can cause them to throw it back up, or the only way they know how to get rid of the sick feeling is by throwing up. Hope i helped.
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Maybe he/she has a stomach ache. Grass helps dogs with stomach aches some how. The vomiting is just getting whatever is hurting his/her stomach out.
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All dogs do that. It's natural. Not sure why, might be to clean themselves out.
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dogs eat grass because their stomachs are upset.. but evidently it isnt helping him because he still throws up. maybe he is getting too hot, or playing too hard. idk could be alot of things. possibly he is allergic to something in his food.
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i don't know about dachshunds but cats sometimes eat grass purposefully to make themselves sick if they don't feel very well. maybe it could be a similar thing? if it continues maybe you should take him to the vet.
awww i hope he gets better soon.
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I also have a dachshund and its because they will eat ne thing. Whenever i give him some dog food, he eats really fast and it seems that he can never get enough to eat. dog's are more roudy and they play more. my cat also eats grass.
They probably newly discovered grass and they want to try it and they love to be outside.
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they vomit it out because it is how there reguratate.
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Animals know when something isn't going right inside them. You probably need to change his food because he knows that he cant digest it easily.
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Dogs are NOT stupid.
But they like to eat grass when they have stomach aches.
It's kinda like you know when you don't feel good and your really sick and sometimes throwing up makes you feel better? Well whatever is upsetting your pups tummy, grass makes him feel better.
Don't worry, it's completely normal.
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He does this because he's a dog… 'nuff said.
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Actually dogs don't eat grass infect it could be prawn or rottens bugs it is because dogs aren't like cats.
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guess what
i found an answer…for only thousnad dollars :p
was joking
take a look at :
http://books.google.co.ma/books?id=hEnaSgCm_wEC&pg=PA259&lpg=PA259&dq=Dachshund+eats+grass&source=bl&ots=r31cL3YTpM&sig=wwrAGJpPTpSomyKkfVdNlPFPUXU&hl=fr&ei=8X8mSrquEZOnsAa7h8GABg&sa=X&oi=book_result&ct=result&resnum=2
hope it helps you
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Some people think dogs eat grass when they have an upset stomach. Since grass is not very digestible, many dogs do vomit after eating it, but this is not always the case. Some canine grazers show no sign of gastric distress before or after eating grass, while other dogs always vomit after munching on grass. Do those dogs eat grass because they already have an upset stomach and they want to vomit, or do they vomit simply because the grass upsets their stomachs? That's a question with no clear answer.
Another common explanation is that dogs eat grass to make up for a vitamin deficiency or a lack of roughage in their regular diet. It's unlikely that eating grass will actually add any essential nutrients to a dogs diet, and many healthy dogs who always eat a perfectly balanced diet also eat grass.
Most veterinarians agree that dogs eat grass simply because they like the taste. Eating grass is not a sign of illness. If, however, there are signs of ill health such as excessive vomiting, vomiting not associated with grass eating, loss of appetite, diarrhea, weight loss, lack of energy, or any other symptoms of illness – call your veterinarian.
If you want to discourage grass eating and the vomiting that follows, frequent lawn mowing can help. Since clumps of tall grass seem to be especially appealing to most grazers, keep grass well trimmed around the edges too.
References :