My family and I took in my cat, PJ from outside and he lived in my garage. My dad spotted a flea on him so we put a Hartz Ultra guard Flea Collar on him last night around 9pm. This cat was perfect. He was still small, peppy, he would talk back when you’d say his name. I got home from school and he wasn’t peppy and happy like he was. After a while my parents realized he had peed in the spot he was laying in so he was rushed to the vet. As they walked in the door, he died. The vet said it was from Pneumonia, but other than that he was in perfect health. The vet thinks that it died from that. Does anyone else have this happen or have any input, please, please contact me.