Eating grass seems to be a normal behavior for dogs even though we tend
to think that their diet should consist of other things. There have been a
number of studies done trying to link grass eating with illness, vitamin
or mineral deficiencies, lack of roughage in the diet and other things ---
all without producing a strong correlation to any particular problem.
It is interesting that your dogs are choosing particular spots. If the
grass is different in this spot it may just taste better. I know of
several dogs in my practice who eat grass that other dogs have urinated on. If
it is possible that this is happening it might explain the preference for
these spots, since many dogs urinate in the same spot frequently.
I wish that I did have an answer for this question, as it is a frequent
one in my practice.
What value is eating grass to dogs
Question: Is there nutritive or palliative value in certain grasses? If so, would
you know which grasses? And what is in those grasses that will make dogs
or cats eat them?
Answer:
I am sure that there are nutrients in grasses but I don't think that there are ones that are essential to dog or cat health that are not found in their usual diet. I do not know of any therapeutic value to grass ingestion. That doesn't necessarily mean that there isn't some value I'm not aware of, though.
I think that some dogs and cats like the taste or texture of grass. Wild dogs and cats probably ingest grass as part of their diet when they eat herbivores who have ingested grass so it may be a flavor they have a genetic predisposition to like, although that is just conjecture on my part.