Mi vecina quiere adoptar un conejo como mascota para sus hijas.

Vecina means female neighbour, while vecino means male neighbour.

Because the sentence is talking about a woman, Spanish uses the feminine form:

• mi vecino = my male neighbour
• mi vecina = my female neighbour

This is grammatical gender matching the person being described, not the speaker.

No. Mi does not change for the gender of the noun.

So you say:

• mi vecino = my male neighbour
• mi vecina = my female neighbour
• mi libro = my book
• mi casa = my house

What changes with mi is normally number, not gender:

• mi vecina = my neighbour
• mis vecinas = my neighbours

Quiere is the third-person singular form of the verb querer in the present tense.

The subject is mi vecina, which is she, so Spanish uses:

• yo quiero = I want
• tú quieres = you want
• él/ella quiere = he/she wants

So:

• Mi vecina quiere... = My neighbour wants...

After querer, Spanish normally uses an infinitive.

So the pattern is:

• querer + infinitive

Examples:

• Quiero comer. = I want to eat.
• Quiere estudiar. = She wants to study.
• Mi vecina quiere adoptar un conejo. = My neighbour wants to adopt a rabbit.

This works like English want to + verb, except Spanish usually does not need a separate word for to here.

Conejo is a masculine singular noun, so it takes un.

• un conejo = a rabbit
• una coneja = a female rabbit

In this sentence, conejo is being used as the general word for rabbit, so un conejo is perfectly normal.

Como mascota means as a pet.

In Spanish, when como means as and introduces a role or function, the article is often omitted:

• trabaja como profesor = he works as a teacher
• lo usa como herramienta = he uses it as a tool
• adoptar un conejo como mascota = to adopt a rabbit as a pet

You can sometimes hear como una mascota in other contexts, but here como mascota is the most natural phrasing.

Because mascota is grammatically a feminine noun in Spanish. That does not mean the animal itself has to be female.

So:

• la mascota = the pet
• una mascota = a pet

Grammatical gender and real-life sex are not always the same thing. A male rabbit can still be una mascota, because the noun mascota is feminine.

It means for her daughters in this context.

Para often expresses:

• purpose
• destination
• intended recipient

So here the idea is that the rabbit would be adopted for the daughters.

Other examples:

• un regalo para mi madre = a gift for my mother
• comida para el perro = food for the dog

Yes, su/sus can be ambiguous.

Sus hijas can mean:

• his daughters
• her daughters
• your daughters (formal singular)
• their daughters
• sometimes your daughters (formal plural, depending on region)

In this sentence, context strongly suggests her daughters, meaning the neighbour’s daughters.

Also notice that sus agrees with the thing possessed, not the possessor:

• su hija = his/her daughter
• sus hijas = his/her daughters

It becomes sus because hijas is plural.

Hijas specifically means daughters.
Hijos can mean sons or children in a mixed/unspecified group.

So:

• hija = daughter
• hijas = daughters
• hijo = son
• hijos = sons / children

Since the sentence says hijas, it is specifically referring to girls.

Because the personal a is mainly used before specific people, and sometimes before animals when they are very personified or treated almost like people.

Here, un conejo is just a nonspecific animal being adopted, so no a is used:

• Quiere adoptar un conejo.

Compare:

• Veo a María. = I see María.
• Quiero mucho a mi perro. = I love my dog very much.

With pets, the personal a is possible when the animal is viewed as an individual. But in this sentence, un conejo is more general, so omitting a is normal.

A little, yes, but the original order is the most natural.

Standard order here is:

• Mi vecina = subject
• quiere adoptar = verb phrase
• un conejo = direct object
• como mascota = role/purpose
• para sus hijas = recipient/beneficiary

You could move some parts for emphasis, for example:

• Para sus hijas, mi vecina quiere adoptar un conejo como mascota.

But something like Mi vecina quiere un conejo adoptar is not correct. After quiere, the infinitive adoptar should stay together with it.

In Spain, quiere is pronounced roughly KYEH-reh.

A few useful points:

• qu before i/e sounds like a hard k
• the u is silent in que/qui
• ie here forms a diphthong

So:

• quiere ≈ KYEH-reh

In Spain:

• conejo ≈ ko-NE-ho
• hijas ≈ EE-has

Important detail: the j in Spanish is not like the English j in job. In Spain, it is a strong throaty sound, similar to the ch in Scottish loch.

Also:

• h in Spanish is silent, so hijas begins with the vowel sound.

Adoptar is very natural here, especially if the idea is taking in a pet rather than buying one.

Other possibilities would change the meaning slightly:

• adoptar = adopt
• comprar = buy
• conseguir = get/obtain
• tener = have

So quiere adoptar un conejo suggests a humane, pet-adoption context, which sounds very natural in modern Spanish.

Yes, but the meaning would become more specific.

• un conejo = a rabbit / a male rabbit
• una coneja = a female rabbit

In many contexts, conejo is used as the general dictionary form for rabbit, so it does not always strongly emphasize that the rabbit is male.

If you specifically wanted to say the rabbit is female, you would use una coneja.