These are not smart animals. (these - plural masculine)

(a)  

One of the wildebeests is named Steve.

(a)  

The other (force it to be fem.) wildebeest is a girl that is named Roxy.

(a)  

The two wildebeests observe that there is an object in the water.

(a)  

The first wildebeest says, "This object is a crocodile."

(a)  

The other wildebeest responds, "No. The object is a log."

(a)  

The first wildebeest is (feeling) frustrated, and insists that it is a crocodile.

(a)  

The first wildebeest throws a rock at the object. (at the = al) (tira = throws)

(a)  

The two wildebeests observe the object, but it doesn't move.

(a)  

Finally, the first wildebeest jumps on the object, and exclaims, "It's a crocodile!" (salta en = jumps on)

(a)  

The object is an enormous crocodile, and it devours the first wildebeest.

(a)  

The other wildebeest observes that the object is a crocodile. It's obvious.

(a)  

Another wildebeest enters and observes the object. It says, "Look! A log!" (look = Mira) (I made "another" masc.)

(a)  

It's a cycle. (The) Wildebeests are idiots. (ciclo = cycle) (idiots = idiotas)

(a)