Quote Originally Posted by froghub View Post
Yeah, you are right. So i guess the cricket must have in some way managed to cut the frogs mouth. I'll take special care this days.
Hope it's nothing, thanks Bryce
These frogs have tough skin and the spines on the hind legs of crickets would have difficulty piercing it. Are you positive it was blood? The reason i ask this is because their blood clots very quickly and would begin to coagulate rapidly once exposed to the air. Did you happen to get any photos of what you are describing?

Bryce is correct. Insect blood is called hemolymph and is not normally red in color because it does not contain red blood cells. Crickets do occationally produce a spit similar to what grasshoppers produce and can be reddish brown. The cricket could have gotten on the frog's face and left a spot before the frog attempted to eat it.