Where does “Leitao” come from?

Leitao (English) comes from Portuguese leitão, from Portuguese Leite, from Old Portuguese leite, from Vulgar Latin lactem, from Latin lác, from Proto-Indo-European ǵlákts — milk.

Ancestry of “Leitao”, step by step

Step	Language	Word	Meaning
1	Portuguese	leitão	piglet
2	Portuguese	Leite	milk
3	Old Portuguese	leite	—
4	Vulgar Latin	lactem	first-person singular present active subjunctive...
5	Latin	lác	milk
6	Proto-Indo-European	ǵlákts	milk

Every word from Proto-Indo-European ǵlákts →Every word from Latin lác →Every word from Vulgar Latin lactem →