Pan troglodytes is the scientific name for Chimpanzees. Chimps have closely related cousins (99.6% similar DNA) known as Bonobos. They are sometimes called "Pygmy Chimps" since they have much lighter frames. However, this name is not widely accepted any more. The scientific name for Bonobos is Pan paniscus. Both of these are covered under the genus name of Pan, which is a reference to the Greek god who was looked upon as being half man and half animal.
There is no plural form. Do and Do not are verbs
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "is" is "are."
The plural form of "was" is "were."
The plural form of "I" is "we."
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.
The plural form of the demonstrative pronoun 'that' is those.
Trenches is the plural form.
The plural form is metres.