Amphibians secrete a mucus through their skin to help them evade predators, but in some species this slime is toxic. The Colorado/Sonoran River Toad, Marine Toad and Cane or Bufo Toad can kill by affecting the heart and central nervous system. To avoid pet interactions with poisonous toads:
Teach pets to “leave it” and not chase critters.
Observe when investigating uncharted territory.  
Article By Denise Fleck, The Pet Safety Crusader ​

These first-aid practices should be implemented in the event of a snake bite: For non-venomous snake bites:                                                                                        Wash the wound with antibacterial soap and observe. If red or warm to the touch, get to the veterinarian for antibiotics or other treatment. If unsure, assume it was a venomous bite:
Keep bite wound below level of heart to slow absorption; do not wash or massage area.
Keep animal calm since the faster he breathes and circulates blood, the faster the venom moves.
Call ahead and get to veterinary care for treatment. Do NOT:
Cut the bite and try to suck out the poison.
Manipulate the bitten area or allow the pet to move about freely. Place an ice pack over the bite.  
​Article By Denise Fleck, The Pet Safety Crusader

These first-aid practices can be implemented in the event of fly strikes: Softens scabs with a warm, wet washcloth until they can be gently wiped away.            Clean with Betadine or Chlorhexidine. For cats, plain, warm water is safest.      Apply antibiotic ointment, but if wounds don’t heal or you see maggots, get pet to the vet!  
Article By Denise Fleck, The Pet Safety Crusader ​