Picture this: Its a extremely hot day, you have been walking for miles without anything to drink. You are tired and exhausted, the only thing you can think about is getting some water in your system, but you cant use your voice to ask for any, and you dont have any thumbs to get some yourself, sounds pretty terrifying. A thirsty pet goes through that every time they get dehydrated, and unless you as the pets owner knows the signs of dehydration, then your pet might unnecessarily suffer, or much worse, die.
A heatstroke normally occurs when an animal is unable to regulate their body temperature, since dogs don't sweat like humans, and rely on other ways to cool down like panting, they are more susceptible to heat related illnesses. If they are unable to bring their body temperature on their own, your dog may hyperventilate and start to pant excessively, it’s gums may become dry and pale, it may start salivating uncontrollably, become confused, experience vomiting or bloody diarrhea, and if you don't treat your overheating animal their condition could worsen resulting in a seizure or coma. In order to prevent heat related illnesses, make sure your dog has a nice shady place to relax under in hot days, on extremely hot days