The 1999 anime adaptation is now available for viewing on the website Hulu. The series was adapted from Tecmo-Koei's game of monster breeding where monsters were created using all kinds of methods.
The series ran on US airwaves on the Fox Kids and BKN blocks, which were dubbed and edited for content. During the early 2000's, it was a popular show and it ran for 3 seasons here. Hulu has the first 12 episodes running out of the 73 total episodes.
With the show being on Hulu, it could be a possible home video release of the series, which would include the English dubbed and the original Japanese versions.
Do you remember Monster Rancher?
Source: Animenews.biz