I have no clue. Maybe you should take it to the vet.
A 4-month old puppy doesn't know what to eat. It's still learning that...they think grass is food, until they throw up...OR THEIR OWNER STOPS THEM!!! (take that as a hint)
do u have a dog or a puppy well anyway you can buy puppy grass that the dog/puppy will pee on like grass outside..... older dog I'm not so sure about did the best i could.
There are a few reasons why your puppy might be throwing up after eating and drinking. It could have a twisted stomach for example.
Human beings are capable of eating almost anything so one could probably eat a puppy.
A puppy might do it because it is bored, or experimenting. An adult dog might do it because it feels sick - eating grass makes them vomit, to get rid of whatever is inside them that is making them feel unwell.
It could be that he/she is eating too quickly, maybe give her little amounts of food at a time and see if that helps.
If you have been trying to toilet train your puppy and it has learned to go outside OK but when the grass is wet it 'reverts' to going inside, this is because your puppy is not used to the look and feel of wet grass, it is strange to to him. Try taking the puppy out on dry days and wetting the grass so that he can get used to it.
Usually when a dog eats grass it helps them with digestion.
because theyre thinking of running through grass with there friends
Any puppy who will not eat or drink needs to see a vet. Could be anything, but she needs to be checked.
You should have it screened for lymphoma. The symptoms you described are some of the symptoms for lymphoma.
A month old puppy is not weined yet. He still needs his mothers milk.