After the battle with Porus, too, Bucephalas died,—not at once, but some time afterwards,—as most writers say, from wounds for which he was under treatment, but according to Onesicritus, from old age, having become quite worn out;Cf. Arrian, v. 19, 4 f. for he was thirty years old when he died. His death grieved Alexander mightily, who felt that he had lost nothing less than a comrade and friend; he also built a city in his memory on the banks of the Hydaspes and called it Bucephalia. It is said, too, that when he lost a dog also, named Peritas, which had been reared by him and was loved by him, he founded a city and gave it the dog’s name. Sotion says he heard this from Potamon the Lesbian.