We do believe Muhammad(saws) was carried to a heaven by a creature of some type. It was something Muhammad(saws) had never seen before and never saw again. We do not know what it was except it was sent by God(swt). No where did Muhammad(saws) call it a winged horse.
Dog Memory Span. To be able to make a somewhat complete analysis about the span of dog memory, it is important to differentiate between associative memory and real memory. It is said that if a dog does not have some sort of exterior stimulus that he is not able to think about or remember parks or places he has been in before. But as soon as dog hears his owner's voice, smells him or perceives his presence at a distance, his associative memory activates or comes to life.
The average life span of the North American or European dog is 12.8 years. This is a large increase in life span over the past 100 years and is mostly attributable to better food and better medical care. Within this 12.8 year average for all dogs is a large range of life spans where certain breeds live longer and certain breeds live less long. In general, larger dogs live shorter lives than smaller dogs.