Head Keeper Bob

Head Keeper Bob is the head game keeper at Prehistoric Park. He is in charge of feeding, cleaning, and containing the animals in the park, and is often the one who usually tidies up after Nigel. Bob has long suffered from his job, from dealing with the troublesome titanosaurs to being attacked by a stowaway Troodon. However, Bob does have some good sides to his job, such as rearing two baby Ornithomimus, jousting with the Park's resident teenage Triceratops, Theo, and being the head keeper at the ultimate wildlife sanctuary.

T-Rex Returns
At the beginning of the episode, Bob works with the rest of the park staff to set the enclosures up and ensure the park is ready for its first arrivals. Later in the episode, after Theo the Triceratops had arrived, Bob creates a plan to help solve his desire for "jousting", after seeing the sub-adult Triceratops ramming his head into a tree. Bob and his team attach pipes and tires to a tractor, leading to the machine bearing some superficial resemblance to a Triceratops. This is used to match Theo's strength. Bob and Nigel ride it into Triceratops Creek and have a "joust" with Theo. They are careful to ensure he wins in the end.

A Mammoth Undertaking
During a discussion with Nigel and Suzanne, Bob advocates for keeping Martha away from the elephant herd due to their complex preexisting social structure. However, in the end, he agrees that they have to try to integrate her.

Dinobirds
Terrence and Matilda have a violent fight during the episode, forcing Bob to use a fire hose to break them up. Terrence is then moved away for a dividing wall to be constructed separating the Tyrannosaurs. At the end of the episode, Bob is surprised when Nigel rescues a herd of Titanosaurs. He does create a paddock, but it proves ineffective as the large dinosaurs can simply break down the fence.

Saving the Sabretooth
Bob artificially incubates outcast Ornithomimus eggs rescued by Suzanne. While he is implied to have accidentally turned the temperature slightly too low, the eggs are still able to hatch.

The Bug House
The Bughouse intended to be used to house the Carboniferous arthropods was not yet constructed by the start of the episode. Bob and his team work to complete it. However, the Titanosaurs roaming throughout the park are causing many problems. They seem to be looking for something, but Bob isn't sure whether it is plant material or something else. However, eventually, a friend of Nigel's, who is a paleontologist, sends Bob the answer. The Titanosaurs need gastroliths to grind up the plants that they are eating. Therefore, Bob is able to satiate them with wheelbarrows full of stones.

Supercroc
Bob works to help keep the Terror bird in its pen. The issue is that the bird dust bathes near the wall, which doesn't have stakes that go far into the ground. As such, a hole is eventually dug that is large enough for it to escape. Bob initially remedies this problem by working with his team to fill the holes with stones. However, this is not a permanent solution, as it escapes and tracks down Bob. Staff lead it away with a large chunk of meat.

After Nigel returns, Bob drives his jeep, unaware that it contains a stowaway Troodon. The dinosaur emerges and attacks, causing Bob to lose control of the jeep temporarily. It spooks the Titanosaurs, which begin a stampede that initiates the Mass Break-Out.

Portrayal in the series
Head Keeper Bob is depicted as a crusty, suffering, often complaining older man, who is loyal to Nigel, but also tends to be cantankerous about the number of prehistoric animals Nigel brings to the Park since the park's staff is overwhelmed throughout the show. He is creative and capable of improvising to adapt to various circumstances. This can be seen in his plan to contain the Terror Bird, and when Nigel brings back the unexpected Titanosaurs. However, he serves as comic relief in certain situations, such as when the Titanosaurs escape his enclosure immediately, or when he brings a literal bird cage to Nigel for the Terror Bird expedition due to a miscommunication.

Actor
Head Keeper Bob is portrayed by English actor Rod Arthur. Besides starring in Prehistoric Park, Rod Arthur has also appeared in shows such as Coronation Street, Doctor Who, and Law & Order: UK.

Trivia

 * Occasionally, Bob serves as comic relief, as in the incident with the Terror Bird's cage, when, instead of an enclosure, Bob brings Nigel an ordinary birdcage. (Saving the Sabretooth)
 * Bob's favorite Carboniferous animal in the Prehistoric Park is the Arthropleura, as "[h]e's more like a proper animal than some creepy-crawly little spider." (The Bug House)