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- Bคdฬ๏lŦLv 51 decade agoFavorite Answer
Because bacteria and debris get into eyes and to prevent damage or infection occurring they produce a mucus substance to expel it.
- 1 decade ago
- 1 decade ago
It is like the doggie version of sleep, it is very common in dogs with droopy eyes.
Source(s): my dog gets it - 1 decade ago
NO CLUE...but we havem too & they need to be cleaned daily to prevent eye infections or worse.
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