hund(fido).
hund(hundie).
hund(fiffie).
hund(toele).
hund(kaligula).

katze(tiger).
katze(garfield).
katze(shirkan).
katze(mietze).

person(hans, 37, [shirkan]).
person(peter, 12, [toele]).
person(julia, 17, [fido]).
person(stefanie, 25, [mietze]).
person(philip, 19, [kaligula, garfield]).
person(andrea, 21, [fido]).
person(mike, 28, []).
person(uwe, 33, [hundie, tiger]).
person(dominik, 30, []).
person(jutta, 32, [hundie, tiger]).