I feed a 'porch cat' who is exhibiting signs of possible urinary blockage. He's been hanging around our house 3 years. 2 years ago I was able to live trap him and take him to get him neutered and get all of his shots. I estimate him to be about 4 to 5 years old. Since that time I put food and water on our porch everyday as does a neighbor. We also put out a warm box in the winter for protection. I have not been able to get closer than 6 ft to him since that time. Today he was digging a hole and straining and crying. I feel like he needs to get into a vet to be seen, but I have no way of catching him. Would feeding him tuna water be helpful in this situation to get him more hydrated or be worse because it would fill up his bladder even more? I can get him to come up and eat some food, but he will not get near a live trap again. I can't get close enough to net him either.