What's your question? Ask

This article should help: https://www.gardeningknowhow.com/ornamental/shrubs/holly/how-to-tell-the-difference-between-a-male-and-female-holly-bush.htm

First of all, holly leaves are naturally prickly, so that doesn't help much. Secondly, I seriously doubt a chipmunk or other animal has eaten the leaves. Insect pests, on the other hand, are possible, though probably not as likely in this case. Nonetheless, check the plants carefully for pests. I would even say to go as far as to treat the plants with an insecticide (I like neem oil, myself - effective and organic) just in case.

Most likely, the plants are simply stressed and shedding the leaves as a result of this. Do the leaves turn brown or yellow before they fall off? Brown leaves would indicate a disease issue or drying out, while yellowing of the leaves could be from a number of things. Here is an article on some possible causes of the stress: https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-yellow-leaves.htm

Yes, you can normally dig them out. I personally love using a sawzall for removing shrubs. Because it has a disposable blade, you can plunge it into the ground and cut through roots and dirt and remove stumps from shrubs and trees easily and not worry about ruining it.

I don't think he's killed them. However, I would not expect them to produce any berries this year. While you can prune now, it limits berry production. This is why most pruning does not take place until winter, after the berries have already produced.

If u go to the left side of this site go to the section of trees and shrubs. Search holly trees/bushes and u get a bunch of different subjects concerning them. I have 20' American holly trees and they get the fsame thing ur bushes do. I'm going to get my soil tested as suggested and I have as yet been able to get an arborist tell me what/if I have insects damaging the trees. Hope this helps!

It is hard to tell, but the one with brown leaves may have holly scorch. They do recover from it, but look awful for a few months while the problem runs its course.