牛鼻魟得名于其喙部的独特形状，由于胸鳍被一条中折线分割成两瓣，所以看起来就像是牛的鼻子。
The species takes its name from the shape of its rostrum, where the pectoral fins split into two lobes separated by a center crease—creating a feature rather like a bovine nose.
去年，加拿大安大略布鲁克大学的格伦·塔特索尔发现，托哥巨嘴鸟身体中高达60%的体温都会通过其喙部流失。
Last year Glenn Tattersall of Brock University in Ontario, Canada, found the toco toucan loses up to 60 per cent of its body heat through its beak.
如果托哥巨嘴鸟是在寒冷的爱尔兰进化而来的，它那令人印象深刻的喙部就会比现在小得多了。
If the toco toucan had evolved in chilly Ireland, its impressive bill would have been much more modest.
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