We were in the Keys last year for the month of February, and our small 5 lb dog chased through the yard, and became deathly ill. We were lucky to get her to a vet within 15 minutes and she survived. The vet asked us if we saw toads? We did discover baby toads in the yard. Our dog did not catch any toads in her mouth, but the vet said even the excretion in the grass can be lethal especially to small dogs. I looked into the muzzle, but with this scenario, their paws and tongues are still exposed to the grass, leaving them at risk for exposure.