[3] In United States, the series was shown under the alternative title Mini Monsters, which aired at Discovery Channel on 31 May 2014.

[4] Kim Shillinglaw, the BBC's head of commissioning for natural history and science, announced the series on 21 November 2013.

[3] The following landscapes were used for the series: savanna, desert, jungle, forest and the metropolis of Rio de Janeiro and Tokyo.

[7] The series has been licensed to Network Ten (Australia), BBC Knowledge (South Africa), Sveriges Television (Sweden) and RÚV (Iceland).

[19][20] The musical score and songs featured in the series were composed and conducted by Ben Foster, with the performed by the BBC Concert Orchestra.