Squirrel & tree? The tree in my backyard is greatly big & very close to...

The tree in my backyard is greatly big & very close to my house.
Today, I saw two holes within the middle of the tree and squirrel
came into it.
Does that weaken my tree?
Will the tree easily trip up down if there is big gust?

Thanks,
I entail to put some flowers on my...
Answers:    ably, you can fill (patch) the holes near concrete, but I vote for the squirels. Did you ever eat fried squirrel brains?
How do i look after indoor orchids.?
If the holes are within a area where on earth the branches are narrow, this can undercut the tree.
Watch the areas around the hole, and see if they start to look different from the rest of the tree. If they do change, this indicates the tree is dying, and it will become a threat.