MySQL returned error

Error Description :

Error No : 1064
Description : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and slug='natural-absorbent-amp-eco-friendly-pet-litter-sand-clay-for-cats-dogs-' at line 1

SQL Query
SELECT `category`.* FROM `category` WHERE id!=0 AND status='Active' and parentcategory_id= and slug='natural-absorbent-amp-eco-friendly-pet-litter-sand-clay-for-cats-dogs-amp-other-pets'