Il gatto maschio segue la gatta.

Italian nouns often change form to show grammatical gender.

• gatto = male cat or sometimes just cat in a general sense
• gatta = female cat

So in this sentence:

• il gatto maschio = the male cat
• la gatta = the female cat

This is a very common pattern in Italian:

• -o often marks a masculine noun
• -a often marks a feminine noun

Because gatto by itself can sometimes mean cat in a general or masculine sense, but gatto maschio makes it completely explicit that the cat is male.

• maschio = male
• femmina = female

So gatto maschio is a more specific way to say male cat.

In everyday Italian, people may also simply say gatto if the context already makes the sex clear.

Because Italian articles must agree with the gender of the noun.

• il is the masculine singular definite article
• la is the feminine singular definite article

So:

• il gatto = the male cat / the cat
• la gatta = the female cat

This agreement is one of the most important features of Italian grammar.

Here, maschio is functioning as an adjective meaning male.

It describes gatto:

• gatto = cat
• maschio = male

Together: gatto maschio = male cat

Italian often uses words like maschio and femmina after the noun to specify biological sex.

In Italian, adjectives often come after the noun they describe.

So:

• gatto maschio literally looks like cat male
• natural English translation: male cat

Not every adjective always comes after the noun, but this is very common, and with maschio/femmina it is especially normal.

Because the subject is il gatto maschio, which is third person singular: he/it.

The verb is seguire = to follow.
Its present tense forms include:

• io seguo = I follow
• tu segui = you follow
• lui/lei segue = he/she follows

So:

• il gatto maschio segue = the male cat follows

segui would be you follow.
segua is not the normal present indicative form here; it belongs to other moods/uses.

Because Italian usually does not need subject pronouns when the subject is already stated or clear from the verb form.

Here the subject is explicitly named:

• Il gatto maschio = the male cat

So there is no need to add lui.

Italian often works like this:

• Il gatto segue la gatta.
• literally: The cat follows the female cat.

A separate pronoun like he would normally be unnecessary.

Italian usually shows this through word order and the presence of articles/nouns.

Here:

• Il gatto maschio comes before the verb, so it is the subject
• la gatta comes after the verb, so it is the object

So:

• Il gatto maschio = the one doing the following
• segue = follows
• la gatta = the one being followed

If you reversed the nouns, the meaning would change:

• La gatta segue il gatto maschio = The female cat follows the male cat

Yes. That would be a perfectly natural sentence.

Adding maschio just makes the male sex explicit. Without it:

• Il gatto segue la gatta can still be understood as The male cat follows the female cat
• but gatto may also feel a little more general, depending on context

So maschio adds clarity or emphasis, not basic grammatical necessity.

Gatta specifically means a female cat.

Unlike some English words, Italian normally keeps this distinction:

• gatto = masculine form
• gatta = feminine form

If you use gatta, you are specifically identifying the animal as female.

Yes. This is the most neutral and standard word order:

subject + verb + object

• Il gatto maschio = subject
• segue = verb
• la gatta = object

Italian can change word order for emphasis, style, or contrast, but this version is the most straightforward.

Segue is pronounced approximately SEH-gweh.

A few useful points:

• se- sounds like seh
• gu before e keeps the hard g sound
• the stress is on the first syllable: SÉ-gue

So it is not like English seg-you.
It is closer to SEH-gweh.

Because seguire is a direct transitive verb in Italian, just like to follow in English.

You directly follow someone:

• seguire qualcuno = to follow someone

So:

• segue la gatta = follows the female cat

No preposition is needed.

Yes, depending on context.

As a masculine noun, gatto can mean:

• specifically male cat
• or more generally cat, especially when speaking broadly or using the masculine as the default dictionary form

But when Italian wants to be clearly specific about sex, it contrasts:

• gatto / gatto maschio
• gatta

That is why this sentence uses gatto maschio and gatta together: it makes the contrast very clear.