Kingdom of Pets Login See if your question has already been asked. Community / Dog Health /My dog is trying to pass cotton string massMy dog is trying to pass cotton string mass Posted by lnoel1221 Mar 10, 2011Hi, my 10 - 11 mo old puppy American bull & cattle dog mix is trying to pass a mass of string swallowed from floss toy. I tried to gently help, but she yelped. Should I let her try to naturally pass? Posted by MaxHollyNoah Mar 11, 2011Hi lnoel1221, It can be dangerous to pull the string. The best thing you can do is to take her to the vet as soon as possible. Posted by KOPCaroline Mar 15, 2011Hey there, Hows the pup? Definitely a situation for the vet, passing any kind of mass can be dangerous and risky to try and help with at home. Did everything come out alright?