It is an Italian word having the same meaning in English and in Spanish. In English it is spelled with two l's. as allegro. In Spanish it is spelled with only one l as in alegro. To determine the meaning:
Veterinary Scales. Weigh all types of pets with more precision than most other veterinary weight scales on the market. Adam Equipment CPWplus 75L may be used for dogs that weigh up to 165 ... Weigh small and medium sized animals with this portable veterinary scale from Tree.
This Toy Yorkie Puppy Growth / Weight Chart gives a fairly accurate estimate of how large a dog will be based on their birth weight. So before you purchase your pup, be sure to consult a chart like the one above to determine if your dog will fall within the appropriate weight range once he is full-grown.