const arr = [["dog", 1], ["cat", 2], ["bear", 3]];
const func1 = ([key, v1]) => ({ [key]: v1 }); // creates an object out of the array

const obj2 = arr.map(func1) 
console.log(JSON.stringify(obj2, null, 2)); // Prints [ { "dog": 1 }, { "cat": 2 }, { "bear": 3 } ]