Features: 1Bird+Call+Sound+Function:+The+balance+car+has+a+built+in+bird+call+sounder.+When+the+cat+gently+touches+the+toy+to+cause+it+to+shake,+it+triggers+the+bird+call+sounder,+which+can+make+a+bird+call+to+attract+the+cat's+attention.+2Sounder+Built+In+Button+Battery:+The+sounder+can+be+replaced+when+the+battery+is+exhausted,+which+is+convenient+and+fast.+The+balance+toy+car+will+have+a+longer+service+life.+3Self+Weight+Balance+Movement:It+adopts+a+self+weight+balance+system,+no+electric+drive+is+required+it+will+move+by+itself+after+the+cat+touches+it+and+it+will+shake+back+and+forth,+effectively+attracting+the+cat's+attention.+4Built+In+Catnip+Ball:+One+catnip+ball+can+be+placed+on+the+transparent+top+of+the+toy.+When+the+toy+is+shaking,+the+catnip+ball+will+be+randomly+and+attract+the+cat+at+the+same+time.+5Multifunctional+Balance+Car:+Interactive+cat+toys+can+be+used+to+satisfy+cat's+play+instincts,+which+can+help+reduce+cats+destructive+behaviors,+increase+their+IQ,+and+maintain+physical+alertness.+Keep+your+cat+alive,+happy. Package+included: 1+x+Balance+Car+Cat+Toy 1+x+Ball+Accessories 1+x+English+Manual