Well I should start this thread by telling you the story of what happened the other night. There I was, on the couch watching tv when suddenly I saw the largest cockroach I have ever seen. In fact, it was about 1/3 larger than any other roach I've encountered in the past. Not only was it the biggest cockroach, it was also a very capable flier - I really haven't seen many cockroaches that flew and this one flew as well as any moth. I am embarrassed to admit that I completely lost it. It kept flying at my head and so as you do, I started screaming and running around the house. Well fortunately Sammy was there and unlike me, he was extremely excited about having this large insect in the house. He was leaping all over the place and finally caught the roach mid-flight.
Now is when it gets weird. Sammy devotes a good portion of his day to catching insects, which is great except for that fact that he also devotes a good portion of his day to trying to lick me :s Anyway, when he catches a fly, he just kills it and moves on to the next, leaving the fly dead on the ground. However, should he catch larger prey like a moth, cricket or roach he behaves in a very different manner. He disables it so it can no longer fly or really escape, and then sits and watches it. Whilst he's doing this though, he produces a foam like substance and coats the insect. Sammy does not normally drool, even around meal times and this isn't like clear saliva, it's bubbly foam. It's like he's trying to net it and drown it all at the same time.
He has always done this, but only with insects. If he catches a rabbit, again he doesn't really kill it but he holds it and plucks it. Only insects bring out the foam.
Here are some pictures to illustrate. Firstly one of the giant cockroach and the second is post-foam.
Would love to know why he does it, or if no-one knows, I'd also love to hear about weird things their dogs do lol.