Vince Vespo, 74, walks his white German Shepherd, Fender, 11, April 6, 2013 in Naples, Fla. After developing degenerative myelopathy over a year ago, Fender, experiences the almost identical symptoms of humans with amyotrophic lateral sclerosis (ALS), Lou Gehrig's Disease, a motor neuron disease. It's uncertain how long the canine will live. "I don't know if we'll be back with him next year. They (dogs) look up at you and tell you when they want to go," Vespo said. "You remember all the good moments you had with them and all the unconditional love they had for you."