My fire-bellied toad recently has started acting oddly. Two Sundays ago, June 30, when I was cleaning the tank, he was pulling his front legs over his head as if rubbing at his eyes and using his back legs even as if to try to remove something from him. I noticed there was a strange, mucus-like slime, which I figured he was trying to get off. Since then, he has not responded to me or anything as much as he used to. It used to be that the slightest movement from me anywhere nearby would make him jump from his position to try to come closer, any noise I made and he would look up; now, I can wave my fingers in front of his face and he doesn't even blink. His eyes are not cloudy, though. Crickets have climbed on his face and he doesn't even squeeze his eyes shut to evade them. The only response I'm really getting is if I click my tongue, and only sometimes will s/he give me respond noises. Last week, from July 1 to July 7, I don't think he ate a single cricket, though I monitored him, and I even picked him up and moved him closer to where the crickets were, hoping maybe he would feel the antennae or something. He doesn't struggle as much when I pick him up now. Also, in deeper water I notice he walks on his front legs and doesn't use the back ones at all. S/He looks a little fatter than usual, though he's not eating. I read on another thread about impaction [?] and how maybe he ingested gravel, which I've always been afraid of, but I don't know if that would explain it. I've had him for three years, he's lived alone for one-and-a-half years, and he hasn't acted like this once before. Any help would be greatly appreciated. Thank you.