Eggs and oocysts of 11 species of parasites were recorded in 21 of 50 sand boxes (200 samples) and in 66 (13.2%) of 500 dog faeces samples from parks and grassy areas in Prague. Toxocara canis was found in 12 sand boxes and in 4.2% of faeces samples and T. cati in one sand box and one sample of dog faeces.