This is the 8762nd most frequent Portuguese word.
amigável
Friendly.
The word 'amigável' here is used as an adjective describing the dog's behavior as being friendly or approachable towards children.
O cachorro dela é muito amigável com as crianças.
Her dog is very friendly with children.
In this sentence, 'amigável' is an adjective describing the nature of the conversation as being pleasant and amicable.
Tivemos uma conversa amigável sobre nossos planos futuros.
We had a friendly conversation about our future plans.
Here, 'amigável' denotes the positive and cooperative nature of the agreement.