Can toxoplasmosis be found in other animals or only in cats?

Technically no.: T. Gondii is an obligate intracellular parasite that exists in three forms: the oocyst, which is shed only in cat feces; the tachyzoite (a rapidly dividing form observed in the acute phase of infection); and the bradyzoite (a slow growing form observed within tissue cysts). During a primary infection, a cat can shed millions of oocysts daily from its alimentary canal for a period of 1-3 weeks.

Warm blooded animals: Though felids are the only definitive hosts of t gondii, it can be transmitted by swallowing oocysts in cat feces, eating tissue cysts in infected meat, and transplacental transfer of tachyzoites.