Akademik

как собак нерезаных
КАК <ЧТО> СОБАК НЕРЕЗАНЫХ кого (у кого, где) highly coll, derog
[как etc + NP; these forms only; quantit subj-compl with copula (subj/ gen: human); fixed WO]
=====
very many:
- Х-ов у Y-a <в месте Z> как собак нерезаных - Y has more Xs than he knows what to do with (than he can handle);
- Y has Xs coming out of his ears;
- Xs are a dime a dozen in place Z;
- there are more Xs in place Z than you can <could> shake a stick at;
- place Z is crawling (teeming) with Xs.

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.