I need to clean the glass daily on my Rhino's enclosure and have seen him on occasion do a quick snort which must send a small amount of saliva or mucous. Little spots are on the glass from him shooting snot or whatever it is out when he rapidly exhales. Is this normal, a defense or stress response, or is there some sort of respiratory issue I should be concerned about? My temperatures are good. This picture is today and he seems very healthy so I have kind of ruled out respiratory problems.






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