Final answer:
The information provided does not address the differences in the ability of spectacled bears and otters to sense sugars, and hence a detailed answer on this topic cannot be presented.
Step-by-step explanation:
The question concerns how spectacled bears and otters differ in their ability to sense sugars, which is a topic within the field of Biology, specifically related to animal physiology and sensory biology. Unfortunately, the provided references do not contain information about the sugar-sensing abilities of spectacled bears and otters, as most of the text discusses feeding behaviors and the ecological impacts of climate change on animals like polar bears. Therefore, I am unable to provide a detailed answer on the sugar-sensing differences between spectacled bears and otters based on the current information.