Hello

I'm new this this forum. We have a 18"X18'X24" terrarium with 2 green tree frogs. One of them has seemed to swallow a piece of moss (ExoTerra forest moss) while he was eating crickets. It is sticking out about an inch out of his mouth so I tried to very gently pull it out to no avail. I don't want to hurt him so I didn't pull very hard. He keeps trying to pull it out himself too with his front legs. He is not looking so good, not very active and breathing heavy.

Any advice?

Thanks