Can anyone shed any light on the following. A colleague, whilst cycling past my house, found a large dead grass snake on the road and bought it to show me. When he tipped it out on the drive, my 3 dogs were present. The 2 terriers were immediately wary of the snake and investigated it at arms legth, so to speak, ready to jump back at any time. My lurcher however, showed no caution, and smelt it all over. She then began to salivate very strongly, to the point where her mouth was frothing up and saliva was dripping onto the drive. At no point did she attempt to pick the snake up. Would appreciate any comment to shed light on this unusual reaction