Do most singular nouns that end with s take plural verbs?

Subjects and verbs must agree in number, so if the noun is singular (regardless of the ending letter) it would take the singular conjugation of a verb.

Examples:

A walrus has large tusks.

My boss is on vacation.

That dress fits perfectly!

Some plural nouns do not end with an -s, but take the verb for a plural form.

Examples:

The man was riding a bicycle. The menwere riding bicycles.

The child is waiting for lunch. The children are waiting for lunch.

A deer was near the road. Three deerwere near the road.