The competition is seeing an increase of entries from toy makers and amateurs, as more of the larger companies pull out due to high development costs. Sony Corp's discontinued their Aibo dog robot last year. More than 100 humanoid robots were entered for the two-day contest which, at the end, saw less than half still standing and divided between heavyweights and featherweights.The competition is seeing an increase of entries from toy makers and amateurs, as more of the larger companies pull out due to high development costs. Sony Corp's discontinued their Aibo dog robot last year. More than 100 humanoid robots were entered for the two-day contest which, at the end, saw less than half still standing and divided between heavyweights and featherweights.