Jump

Japanese name:	ジャンプ
Nickname:	Blip, Plume

Jump was Tobio Tenma's pet dog who was later adopted by Astro. Jump is Astro's loyal pet and sidekick throughout the 1980 anime.

He is smart for a dog. Jump is receptive to commands, but he has a mind of his own and won't do tricks. He is also fiercely loyal and has put his life on the line to protect Astro and Uran.

Astro Boy Wiki