We commonly see young dogs get into all sorts since they are not particularly discerning with what they eat. Therefore, dietary indiscretions are commonplace. That said, we can also see them be at risk of picking up bacterial or viral gastroenteritis, pancreatitis, parasites, and even ingest harmful agents. And I would note that some caterpillars can actually trigger GI upset as part of their "defense" against predators. So, that could be the root cause if she has had one.
Now if her gums are dry and she is still vomiting at this stage, we do need to tread with care with Lucy. This is because this is an early stage warning sign of that dehydration is creeping in. Other signs to check for just now in regards ***** ***** for dehydration include checking whether her eyes look sunken, or whether her skin "tents" when you lift it (instead of snapping right back down). To see how to check these, I would just note that you can watch a good short video @ http://www.ehow.com/video_12232503_dog-dehydrated.html . If you do see any of these other signs, then we'd want to have her seen urgently. Especially since vomiting dogs cannot be syringe fed fluids, else will vomit more.
Further to this, if she isn't dehydrated already and can at least keep water down, there is some supportive care you can try just now. Of course, if she cannot keep anything down at any stage, then that is usually a sign that we need her vet to treat her with injectable anti-vomiting treatment. Otherwise, there are some OTC antacids that we can use to settle our dogs' stomachs. For example, you can use:
*Pepcid (More Info/Dose @http://www.petplace.com/article/drug-library/library/over-the-counter/famotidine-pepcid)
*Zantac (More Info/Dose @http://www.petplace.com/article/drug-library/library/over-the-counter/ranitidine-hcl-zantac)
* Tagamet (More Info/Dose Here @http://www.petplace.com/article/drug-library/library/over-the-counter/cimetidine-hcl-tagamet)
Which ever you choose, it should be given 20 minutes before food and every 12 hours. Of course, if she has a known health issue or is on other medications, then we'd want to check with her vet first.
Once that is on board, I would advise swapping her to a light diet option for the next few days. When you start, do just give a small volume (a spoonful). Examples would be cooked white rice with boiled chicken, boiled white fish, cottage cheese or scrambled eggs (made with water and not milk). There are also veterinary prescription diets that can be used (ie Hill’s I/D or Royal Canin’s sensitivity). When you offer that spoonful, give her 30 minutes to settle. If she keeps the food down, you can give a bit more and so on. As her tummy stabilizes, you can offer more. The aim of the easily digestible diet is that it will be better tolerated and absorbed by the compromised gut. Therefore, it should get more nutrients in and result in less GI upset. As long as improvement is being seen, I usually advise that the diet be continued until the GI upset is settled, and that they are then slowly weaned back to their normal diet over a week.
Overall, we do have a few concerns for her signs. If there is any chance she ate any of the caterpillar, this may be our culprit. So, as long as she doesn't have those signs I asked about and can keep water and that recent feeding down, we can try the above while monitoring her hydration. If you do so, but she isn't settling or we still see vomiting, then we'd need to consider having a check with the local vet. They will be able to assess her hydration, make sure there are no sinister lumps or bumps or things that shouldn't be in her stomach. Depending on the exam findings, your vet can treat her with an injectable anti-vomiting medication +/- antibiotics to address this for her, settle her signs and get her back to feeling like herself.
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