Well, that opening caption certainly synopsized all you need to know about our hero, which is convenient, since this is his one and only appearance anywhere!
The byline is "Jack Lane", but since this story is the only credit for him on the Grand Comic Database, I suspect it's a pseudonym for a writer-artist team, probably from the Iger studios, who supplied a lot of Fox Comics' material.
All-Great Comics was a giant-sized (132 pages!) annual for 25¢ from Fox that basically ran anything lying around the offices including one-shots like Jaguar Man and leftover material from other titles like Green Mask.
(There were 30 different stories in this issue!)
Two comments:
Why doesn't his costume have a mask? Does "Steve Lane: lion house keeper" have no acquaintances who might think his sideline a bit...odd if they ran into him as he prowled the streets?
Don't you think Wonder Woman villainess The Cheetah filled out the exact same costume much better?