It was estimated that cane toads migrate at an average of 40 kilometres ( 25 miles ) per year as of 1994 .
New research in 2014 indicated that the migration rate had increased to 60 km per year on the western front .
It was estimated that cane toads migrate at an average of 40 kilometres ( 25 miles ) per year as of 1994 , but new research in 2014 indicated that the migration rate had increased to 60 km per year on the western front .