Arboreal animals are also terrestrial animals.

The correct option is A True
$\bullet$ Most of the arboreal animals are similar to terrestrial animals, they also breathe using lungs.
$\bullet$ Arboreal animals are the ones that spend most of their lives on trees, like birds, monkeys, squirrels etc.
$\bullet$ These animals live on trees to protect them and their offsprings from predators.