When my son Giulio Xingtian Yehuda Zuckermann, a.k.a. Giulio XYZ, was 2 years old he already knew the Israeli word for 'fish' : DAG. Due to the general tendency towards final devoicing (see, for example, German kind, pronounced kint, or a German immigrant to Israel pronouncing Negev as Negef), Giulio often pronounced DAG as DAK.
"Mnemonics in Second Language Acquisition,"
Word Ways: Vol. 44
, Article 21.
Available at: http://digitalcommons.butler.edu/wordways/vol44/iss4/21